The readers of the Freakonomics blog conducted a Q&A with agricultural economist Daniel Sumner, and all I can say is, Where was this guy when the daughter of a sugar cane farmer bludgeoned me to tears for questioning sugar subsidies?
Q: Are there any good arguments that support farm subsidies? If so, to what extent and in what manner may they be justified?
My longer answer is here.
I look at a dozen suggested rationales for farm programs and reject them all except the last one - which is we have farm programs because we have had them for 75 years and people are afraid of even thinking about a world without subsidies.
Read the whole thing here.
You can check out reason's farm subsidy archive here.