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Fifth Circuit Rules Trump's Use of Alien Enemies Act is Illegal
The 2-1 ruling is in line with most previous court decisions on Trump's invocation of the AEA. Judge Oldham wrote an extremely long, but significantly flawed, dissent.

Yesterday, in W.M.M. v. Trump, the US Court of Appeals for the Fifth Circuit ruled that President Trump's invocation of the Alien Enemies Act of 1798 as a tool to deport Venezuelans is illegal. While multiple federal district courts have issued similar rulings, as have individual concurring opinions by judges on two other circuit courts, this is the first full-blown appellate court decision on the subject. It is therefore an important precedent. There is a lengthy 130 page dissenting opinion by Judge Andrew Oldham. But it's serious flaws merely confirm the weaknesses of the government's position.
The AEA allows detention and deportation of foreign citizens of relevant states (including legal immigrants, as well as illegal ones) "[w]henever there is a declared war between the United States and any foreign nation or government, or any invasion or predatory incursion is perpetrated, attempted, or threatened against the territory of the United States by any foreign nation or government." Trump has tried to use the AEA to deport Venezuelan migrants the administration claims are members of the Tren de Aragua drug gang.
The Fifth Circuit majority opinion by Judge Leslie Southwick (a Republican George W. Bush appointee) holds that TdA's activities - drug smuggling, illegal migration, and related crimes - don't qualify as an "invasion" or a "predatory" incursion and therefore the AEA cannot be used here. Everyone agrees there is no declared war.
On the definition of "invasion," Judge Southwick concludes, after a review of the evidence:
Congress's use of the word in the AEA is consistent with the use in the Constitution, that "invasion" is a term about war in the traditional sense and requires military action by a foreign nation. Petitioners have the sense of the distinctions in saying that responding to another country's invasion is defensive; declaring war is an offensive, assertive action by Congress; and predatory incursion is for lesser conflicts. Of course, after this country has been attacked by an enemy with invading forces, Congress might then declare a war. That occurred in World War II after the attack on Pearl Harbor. Still, when the invasion precedes a declaration, the AEA applies when the invasion occurs or is attempted. Therefore, we define an invasion for purposes of the AEA as an act of war involving the entry into this country by a military force of or at least directed by another country or nation, with a hostile intent.
Every other court to have ruled on the definition of "invasion" has reached similar conclusions, and I argue for that conclusion in the amicus brief I coauthored in W.M.M. on behalf of the Brennan Center, the Cato Institute, and others.
Here is the Fifth Circuit on the definition of "predatory incursion":
These different sources of contemporary meaning that we have identified from dictionaries, the writings of those from the time period of the enactment, and from the different requirements of the Alien Enemies Act and the Alien Friends Act, convince us that a "predatory incursion" described armed forces of some size and cohesion, engaged in something less than an invasion, whose objectives could vary widely, and are directed by a foreign government or nation. The success of an incursion could transform it into an invasion. In fact, it would be hard to distinguish some attempted invasions from a predatory incursion.
This too is similar to previous court decisions, and to the approach outlined in our amicus brief, which explains that a "predatory incursion" is a smaller-scale act of war. The one exception is a district court opinion that adopted an extremely broad definition of "predatory incursion," which I critiqued here.
The majority also persuasively argues that the definitions of "invasion," "predatory incursion" and other statutory terms are not unreviewable issues simply left to executive discretion.
The majority does, however, rule that courts must, to a degree, defer to presidential fact-finding regarding whether an "invasion" or a "predatory incursion" is occurring. It concludes, here, that the facts alleged in the President's Proclamation do not meet the requirements of the correct definition of that term. This may leave open the possibility that the president could simply legalize the AEA by claiming the existence of different (more egregious) "facts," even if the claims are patently false. I have criticized excessive deference on such factual issues in this recent article, and in the amicus brief. Deference on factual questions should not allow the president to invoke extraordinary emergency powers merely by mouthing some words and making bogus, unsubstantiated claims.
That said, the majority does suggest that factual deference must be limited:
The Supreme Court's recent J.G.G. opinion shows Ludecke is to be understood as requiring courts to interpret the AEA after the President has invoked it…. Interpretation
cannot be just an academic exercise, i.e., a court makes the effort to define a term like "invasion" but then cannot evaluate the facts before it for their fit with the interpretation. Thus, interpretation of the AEA allows a court to determine whether a declaration of war by Congress remains in effect, or whether an invasion or a predatory incursion has occurred. In other words, those questions are justiciable, and the executive's determination that certain facts constitute one or more of those events is not conclusive. The Supreme Court informs us that we are to interpret, and we do not create special rules for the AEA but simply use traditional statutory interpretive tools.
If courts must "use traditional… interpretive tools" and "determine… whether an invasion or a predatory incursion has occurred," they cannot simply blindly acquiesce to whatever factual claims the government might make, no matter how specious. Otherwise, interpretation will indeed become "just an academic exercise."
Prominent conservative Judge Andrew Oldham wrote a lengthy 130 page dissent. He's undoubtedly a highly capable jurist. But his herculean efforts here just underscore the radical and dangerous nature of the government's position.
Surprisingly, Judge Oldham doesn't seriously dispute the definitions of "invasion" and "predatory incursion." He just argues that these issues are left to the completely unreviewable discretion of the executive. If that's true, the president could use the AEA to detain or deport virtually any noncitizens he wants, at any time, for any reason, so long as he proclaims there is an "invasion" or "predatory incursion," regardless of whether anything even remotely resembling these things is actually happening. A power that is supposed to be used only in the event of a dire threat to national security would become a routine tool that can be deployed at the president's whim.
And, under Judge Oldham's analysis, the president also could deport and detain these people with little, if any, due process. He contends the government has no obligation to prove that the people detained are actually TdA members. And in fact there is no evidence that most of those deported under the AEA are members of the gang or have committed any crimes at all. Thus, Judge Oldham is essentially claiming the AEA gives the president unlimited, unreviewable power to detain and deport non-citizens - including legal migrants - whenever he wants (again, so long as he proclaims the right words).
Nothing in the text or history of the AEA even approaches this. Instead the text says that the AEA can only be used when a war, invasion, predatory incursion or threat thereof, exists, not merely when the president says so.
Oldham argues in detail that various precedents require the latter outcome. But, as the majority notes, those precedents - including the Supreme Court's recent decision in J.G.G. specifically indicate that there is room for judicial review. Moreover, if the AEA really did grant the president such unlimited power, one would have expected contemporaries in 1798 to point that out and object on constitutional grounds, as they did in the case of the contemporaneous Alien Friends Act, which really did give the president sweeping deportation and detention powers, even in peacetime, and which was duly denounced as unconstitutional by James Madison and Thomas Jefferson, among others. The Alien Enemies Act, by contrast, was far less controversial, precisely because it was understood to be limited to genuine wartime situations, not anything the president might speciously label as such.
Moreover, under Suspension Clause of the Constitution, in the event of an "invasion," the federal government can suspend the writ of habeas corpus, and thereby detain people - including US citizens - without any due process. There is no way the Founders understood themselves to have given the president unreviewable authority to trigger that power anytime he wants.
I won't try to go through all of Judge Oldham's analysis of precedent here. But I will give one example of how problematic it is. The judge argues that Supreme Court's 1862 decision in The Prize Cases gives the president unreviewable authority to determine there is a war going on, and exercise war powers accordingly. The majority opinion in that case does no such thing. Rather, it emphasized the fact that then-ongoing Civil War was a conflict "which all the world acknowledges to be the greatest civil war known in the history of the human race." Thus, President Lincoln's power to establish a blockade in response could not be negated by "by subtle definitions and ingenious sophisms."
The Court then went on to make the point cited by Oldham:
Whether the President, in fulfilling his duties as Commander-in-chief in suppressing an insurrection, has met with such armed hostile resistance and a civil war of such alarming proportions as will compel him to accord to them the character of belligerents is a question to be decided by him, and this Court must be governed by the decisions and acts of the political department of the Government to which this power was entrusted. "He must determine what degree of force the crisis demands." The proclamation of blockade is itself official and conclusive evidence to the Court that a state of war existed which demanded and authorized a recourse to such a measure under the circumstances peculiar to the case.
But notice the president only gets deference on the question of whether the "insurrection" he is "fulfilling his duties" by combatting is one of "such alarming proportions" as to justify a wartime blockade. He does not get deference on the question of whether an insurrection exists in the first place (in that case, as the Court noted, it obviously did). Had Lincoln instead imposed a blockade to prevent, say, illegal smuggling of contraband goods and then claimed smuggling qualifies as war, he would not get the same deference.
Judge Oldham's reliance on other precedents has similar flaws. Nearly all of them also arose from genuinely massive wars, not attempts to pass off drug smuggling or other similar activity as an "invasion." Oldham complains that "[f]or over 200 years, courts have recognized that the AEA vests sweeping discretionary powers in the Executive," and that "until President Trump took office a second time, courts had never countermanded the President's determination that an invasion, or other similar hostile activity, was threatened or ongoing." But the AEA has previously only been invoked in connection with three indisputable international conflicts: the War of 1812, World War I, and World War II. You don't have to be an expert to see the difference between these conflicts and the activities of a drug gang.
The majority, the concurring opinion by Judge Ramirez, and the dissent also address a number of other issues, particularly various procedural questions. I will pass over them for now, as this post is already long.
The Trump administration may well appeal this case to the Supreme Court. If the Court takes it, I hope they, too, will recognize that the AEA doesn't give the president a blank check to wield sweeping extraordinary power whenever he wants.
In the meantime, litigation over this issue continues in various federal courts around the country.
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I have a lot of respect for Judge Oldham. But I found his dissent deeply disappointing and problematic, for the reasons articulated in the OP. The exceptions would swallow the rule, and if you had a fascist President, she or he could run amok, as long as s/he remembered to first utter the magic "Get Into Jail Free" words first.
Yikes.
Those judges are Deep State thugs nullifying the election of President Trump. Trump is keeping his promises. He the greatest President in history, greater than Washington, the past 6 months.
Hey, Somin, Mexicans oppose the cumholing of Mexico by Americans shooting their wads of cash all over the place, making their cities unlivable for the locals.
https://www.cnbc.com/2025/09/03/protests-in-spain-mexico-target-travelers-as-overtourism-anger-grows.html
So according to you, the results of a presidential election nullify the Constitution.
"if"?
Yeah, Nazi boy, if.
Under the reasoning of the dissent, if the US is playing a foreign soccer team on US soil, and their strikers intrude into the US penalty area and risk scoring, the president can declare this an invasion and have them deported, shot or both. Maybe that's the long game...
I don't have any respect for Oldham. Doesn't mean I disagree with all of his rulings, but I don't have any respect for him. This is the doofus who, in the Netchoice case, wrote a ludicrous opinion complaining that the plaintiffs cited lots of Supreme Court 1A precedent in their briefs rather than discussing alleged founding era 1A principles.
The opinion reads like a dare for Trump to write a new proclamation with a few more "facts" such as "Maduro whispered in my ear that he would send TdA to invade and occupy Miami if I didn't lift the sanctions."
More Democrat district judge delusion. The act was passed during and enforced during the undeclared Quasi War in 1798, and two Democrat judges claim it is only in force during declared wars. You can't make up this complete denial of reality among Democrat jurists.
Bush was not a Democrat.
It's not a district court ruling either.
Speaking of denying reality, the 5th Circuit opinion did no such thing. The statute has three triggers, a declared war, an invasion, and a predatory incursion. The opinion acknowledged andgave a meaning to each. Not surprisingly, it said that only the “declared war” prong requires a declared war.
The opinion gave an additional example of where the act was invoked without a declared war. President Roosevelt issued an AEA proclamation on December 7, 1941, shortly after Japan attacked Pearl Harbor. Congress didn’t formally declare war until December 8. For one day, the AEA was in effect without a declared war. The opinion noted that this was an example of an “invasion.”
https://www.presidency.ucsb.edu/documents/proclamation-2525-alien-enemies-japanese
Speaking of denying reality...
Not to mention that the act was never invoked during the Quasi War.
"Predatory incursion". That pretty much fits the current situation.
Why are you lying? What do you get out of this? I mean, at least if you were using your real name when posting, I might understand it a little bit: you'd be getting attention for yourself. But to do it under a pseudonym doesn't even get that. (Though at least it does save yourself the embarrassment of people knowing that you don't know basic English grammar.)
Why the fuck was Irma Ramirez allowed to hear this case? Her parents were Mexican immigrants, and as such, she's clearly not impartial. She's also stupid as hell, but that's separate from her bias.
I’m sorry. This is the United States of America. Racist bullshit like that doesn’t carry here. Go back to Russia where you came from and go back to letting Putin fuck your ass. You can’t fuck with the USA or bullshit real Americans like that. It won’t work. We don’t want you here. We don’t want foreigners like you spitting and shitting out Putin’s foreign cum on us and polluting our American soil.
Are you daft? (one of the few British-English words I like, like "Fag" I'm trying to bring it back) This Nation was built on Racist Bullshit!
LOL!
"America is a racist POS!" and "How dare you, sir, THIS IS AMERICA!".
From the same people.
Really? The same people? When did ReaderY say the first of those?
Dios mio!
Dissent: "That contravenes over 200 years of legal precedent. And it transmogrifies the least-dangerous branch into robed crusaders who get to playact as multitudinous Commanders in Chief."
Too bad Somin cannot be deported.
I guess you'll have to silence him in some other way?
The Ludeke court conducted its own inquiry as to whether a war was going on. A President’s findings of fact are entitled to great deference. But deference is not blind faith and is not a total suspension of disbelief.
If Trump issued a new proclamation saying that a million Venezualians had invaded Los Angeles and completely destroyed it, a court would be permitted to make its own inquiry as to whether or not Los Angeles was in fact still standing.
Don't know if you missed it, but Kristi Noem did literally claim that LA "wouldn't be standing today" and "would have burned down" if not for the actions of Donald Trump. (She modestly declined to take any of the credit herself.)
According to Judge Oldham we're required to believe her.
Well, we're not; but the courts are.
If courts must "use traditional… interpretive tools" and "determine… whether an invasion or a predatory incursion has occurred," they cannot simply blindly acquiesce to whatever factual claims the government might make, no matter how specious.
Fair enough, and a good idea for those who don't like power mongers arrogating power at their whim.
Now do "rational basis".
I'm not sure what point you're trying to make here... the standard the Fifth Circuit articulated is far below even rational basis. It's just... basis. Any basis suffices.
The dissent was right to liken it to "failure to state a claim." Trump's order was struck down on a failure to state a basis.
Trump is right now trying to gin up warlike optics with regard to Venezuela. Expect legal reassertion presently that an actual war does exist. It will be interesting to see if SCOTUS will prove willing to swallow so expansive and so dangerous a pretext.
A war must exist, or Trump just ordered the cold-blooded murder of 11 people in international waters.
The US gvernment has multiple times effected the killing - call it cold-blooded murder if you will - of foreigners outside US territory in the absence of any war, through e.g. the CIA. Christopher v. Harbury held that even if the spouse of the deceased is a US citizen, she has no right to challenge such an action or even demand information about it.
https://www.law.cornell.edu/supremecourt/text/536/403
Actually not just foreigners. They've murdered several US citizens as well.
They are likely to use the circular reasoning that Venezuela narco terrorists had to be blown up in a boat by US military forces because 11 of them were trying to smuggle something [drugs? people?] somewhere in the ocean between there and here.
See? Our military is shooting missiles at them therefore its war-like.
If President Trump actually believe the bullshit set forth in his proclamation, why has he not asked Congress to declare war on Venezuela?
Trump is the president of peace…that’s why he surrendered to the Taliban. Strength through weakness!
The 2 Judges need to be sent to Uganda
Was in Uganda in '94 for Operation Support Hope.
Had a blast; good food there too.
The operations were out of Entebbe Airport - and the old terminal where Operation Thunderbolt was still standing, and still riddled with bullet holes.
https://en.wikipedia.org/wiki/Operation_Support_Hope
https://en.wikipedia.org/wiki/Entebbe_raid
July 4, 1976, my 14th birthday, (and my Uncle Sammie) seems like yesterday :()
Amazingly, except for the “Usual Suspects” most Amuricans were happy to see Terrorist Murderers get there’s
Frank
As an aside: "it emphasized the fact that then-ongoing Civil War was a conflict "which all the world acknowledges to be the greatest civil war known in the history of the human race.""
That dubious distinction goes to the Taiping Rebellion, which was both the largest civil war and largest religious war in history. It made the US civil war seem like little more than a skirmish,
That might have something to do with Judge Roy Bean’s famous ruling discharging a murder defendant because “homicide is the unlawful killing of a human being, but it doesn’t say anything here about killing a Chinaman.”
https://en.m.wikipedia.org/wiki/Roy_Bean
He's great. I mean, terrible, but great.
The wiki doesn't mention Bruno the bear!
"One of the ways Judge Roy Bean made people respect his authority as the Law West of the Pecos in the late 1800s, was to occasionally let them answer to a beer-guzzling bear named Bruno for their crimes."
https://www.texasescapes.com/ClayCoppedge/Roy-Beans-Bad-News-Bear.htm
Think you got that wrong, in the movie Judge Bean (Paul Newman) hung the guy
I see that the fascists continue to hew to the position that if the president wills it, it shall be done.
"The 2-1 ruling is in line with most previous court decisions"
Dude, you a joke.
If OP is wrong; provide the cites to show his statement is false or piss off.
The evidence is presented by your butttbuddy OP. I quoted it. Read it again at your leisure.
“Dude”??
That was old when “Dude? Where’s my car?” Came out in 2001 (and I saw in an actual theater that still used reels)
Actually pretty funny movie, modern day “Who’s on First”
They both wake up with “Dude” “Tramp Stamps” that they naturally can’t see
“Dude! What does mine say? (Other guy)
“Dude!, now what does MINE say?” (First guy) “DUDE!, now what does mine say?……
MAFA
Make Aliens Friends Again
We need a new award - the Ernst Janning award for the most consequential lickspittle judicial deference to looming tyranny. Judge Oldham just rocketed to the top of the list of nominees.
Never forget.
If the Venezuelan army came in through El Paso, Somin would be opposed to deporting them.
Somin is a reliable anti-predictor of how the Supreme Court will rule. The SC will probably narrow the exceptions, but TDA is a designated foreign terrorist organization and we are taking military acrion against their smuggling ops. The Presidents power is at its zenith in foreign affairs.
"If the Venezuelan army came in through El Paso, Somin would be opposed to deporting them."
He'd want to give them green cards. Go-getters! Will raise GDP!
Deportations = Illegal
Extorting Harvard = Illegal
Tariffs = Illegal
Invading Los Angeles = Illegal
Sincerely,
The Law & Order Party
Only illegal in the opinion of some lower court judges.
Am I reading Oldham correctly?
If the president says that the moon is made of green cheese, the judiciary must accept it as fact since these statements of "fact" are non-justiciable?
i.e. not only does the president have the ability to commit crimes without facing indictment, but may also lie to the court with impunity.
Parts of his opinion read like a mixture of a Karoline Leavitt press conference and Steve Bannon working a rally.
Lots of bedwetting cowardice and drama queening about TdA. He says "the danger TdA poses to our Nation is hard to overstate" and then proceeds to spend many pages overstating it wildly. He repeats anecdotes about individual injuries (like pulled fingernails) as if that proves an invasion. He claims the crimes are somehow uniquely violent, which is an outright lie for a federal judge who has overseen many criminal trials. He says its false to say the TdA is not a government.
Finally in his last section, he engages in whining that Biden did it too and whatabout that. No really folks, scroll to the end.
We have judges who think the Moon is made of green cheese.
Looking at this in the abstract, we have a statute that says if the President finds certain conditions are met, he can do X. I think we have to take it as a given that the President would not have the power to do X in the absence of the statute. (If not, the statute is a nullity.)
Judge Oldham appears to be saying that the Court has to defer to the President's finding that the specified conditions are met - the President's finding is unreviewable. Wouldn't that mean that the threshold condition for the President to exercise this power is illusory? The required finding changes from an actual finding certain conditions are met based on facts, to just saying the conditions are met without any underlying support.
It often seems like Trump supporters are assuming that all future Presidents will be like Trump, so there is no reason to worry about what a future Democratic president might do with the expansive power that Trump is claiming.
Perhaps a few of them are assuming that. But I think most Trump supporters simply believe the following:
“When I am weaker than you, I ask you for freedom because that is according to your principles; when I am stronger than you, I take away your freedom because that is according to my principles.”
Project much?
That the best you got?
I mean, its the way they've been treated for 20 years . . .
I don't care.
You've been taking away my rights and claiming it's justified retaliation. That's dishonest. I never voted for a Democrat POTUS in my entire life, but you still shit on *my* rights as part of *your* scheme to get back at *them*.
You think turnabout is fair play? Then you should have found some means that hit Democratic politicians and only them, and leaves innocent men, women, and children out of it.
Polls show there are at least 100M of us (30+%) that think both your parties suck. Plus many more who were cowed, buffaloed, or scared into voting for one or the other. We're the victims and the rest of you are two cartels shooting at each other.
So I don't care what they did to you for 20 years. By my count you and them have been doing it to us most of my life. Cry on some other shoulder.
You think turnabout is fair play? Just remember that while I never did anything to you, your side has pissed all over my constitution. If payback is fair the debt runs all in my favor.
And if any Democrats are reading this, you too.
And yet, as I mentioned the other day: there is absolutely no way that Oldham or any other RW judge would accept that premise if it were, say, Biden trying to impose a regulation relating to climate change. They would never say, "If the president says that such-and-such is a dangerous global-warming-causing pollutant that must be eliminated immediately, we can't question it."
>A prison guard transfers Alien Enemies Act deportees from the U.S., alleged to be Venezuelan gang members, to the Terrorism Confinement Center in Tecoluca, El Salvador. Mar. 16, 2025 (El Salvador Presidential Press Office)
Its amazing how often this one single picture gets re-used - with a different caption alleging its different everytime.
One day its El Salvadoran gang members, next day its AEA prisoners from the US.
I'm surprised the caption is not asserting - again - that this is the cruelest prison in the world.
Maybe it's the picture the "El Salvador Presidential Press Office" wants them to use?
Does the AEA require that a foreign government issue in writing their direct support of a predatory incursion? Is some formal declaration from a foreign government required, or can the president rely on rational inference (cui bono, follow the money, etc.) to determine whether a predatory incursion has been "perpetrated, attempted, or threatened" by a foreign government?
Moreover, in regards to the TDA deportations, Trump is not rounding up foreign persons willy nilly, he targeted aliens who are part of a criminal gang that is an armed force of some size and cohesion, and is engaged in something less than an invasion. Now some will argue that Venzuela’s President Maduro has not formally declared his support for TDA, so that gang’s presence in the US cannot be treated as a predatory incursion, but is that really the requirement?