Sen. John McCain (R-Ariz.) on Tuesday said that an amendment advanced by the Senate would leave the U.S. with the “most militarized border” since the fall of the Berlin Wall and pave the way for the passage of comprehensive immigration reform.

"The legislation concerning beefed up border security removes any validity to the argument that border security is not sufficient," McCain said of the amendment from Sens. Bob Corker (R-Tenn.) and John Hoeven (R-N.D.) in an interview on CNN.