From the New York Times:

Mr. Obama is running as a reformer who is seeking to reduce the influence of special interests. But like any other politician, he has powerful constituencies that help shape his views. And when it comes to domestic ethanol, almost all of which is made from corn, he also has advisers and prominent supporters with close ties to the industry at a time when energy policy is a point of sharp contrast between the parties and their presidential candidates. In the heart of the Corn Belt that August day, Mr. Obama argued that embracing ethanol “ultimately helps our national security, because right now we’re sending billions of dollars to some of the most hostile nations on earth.” America’s oil dependence, he added, “makes it more difficult for us to shape a foreign policy that is intelligent and is creating security for the long term.”

Nowadays, when Mr. Obama travels in farm country, he is sometimes accompanied by his friend Tom Daschle, the former Senate majority leader from South Dakota. Mr. Daschle now serves on the boards of three ethanol companies and works at a Washington law firm where, according to his online job description, “he spends a substantial amount of time providing strategic and policy advice to clients in renewable energy.” Mr. Obama’s lead advisor on energy and environmental issues, Jason Grumet, came to the campaign from the National Commission on Energy Policy, a bipartisan initiative associated with Mr. Daschle and Bob Dole, the Kansas Republican who is also a former Senate majority leader and a big ethanol backer who had close ties to the agribusiness giant Archer Daniels Midland. Not long after arriving in the Senate, Mr. Obama himself briefly provoked a controversy by flying at subsidized rates on corporate airplanes, including twice on jets owned by Archer Daniels Midland, which is the nation’s largest ethanol producer and is based in his home state.

I reported on Obama’s ties to ethanol back in late 2006 and some of his supporters criticized that piece. Their reasoning was: Obama is from a farm state with significant ethanol interests. What can you expect? Of course, by that logic every member of Congress should fight for as much home-state pork as possible, no matter how bad the related projects are for the country as a whole.