I know when I'm not an expert, and while I find American politics fascinating from a distance like the mating ritual of the Capercaillie its not something that I'd claim any kind of expertise in.
So I'd recommend having a look at what John Davis has to say about yesterday's Iowa Primary in Domestic Fuel. Its clearly firing the starting gun in the race to be the next president of the US, and as John says there's a long way to go. But it is interesting to see the initial front-runners Obama and Huckabee stance on biofuels in his post. Of the two Obama's is the most explicit.