In 2007, McCain started to speak more favorably of ethanol and admitted it was a position change. He told Tim Russert on "Meet the Press": "It makes a lot of sense. We are dependent on foreign oil too much. We have a situation where greenhouse gases has now become--emissions has become a vital issue. I am for sugarcane, biofuels, switch grass, and corn-based ethanol because of our need for independence on foreign oil. … I have adjusted to the realities of the world we live in today, and if I don't adjust to those realities, then I would be stuck in the past."
That's a significant change in opinion on the biofuel. We found the statement that McCain used to oppose ethanol but now supports it to be Mostly True.