Secret Report: bio-fuel caused food crises

Environmentalist groups pushed the idea of bio-fuels for decades and now that it has been implemented and turned into a global food crisis, you hardly hear a peep from any of them. This Guardian article relating to an unreleased World Bank report claims that bio-fuels have caused food prices to increase by 75%. While I do believe that bio-fuels have some responsibility for higher food prices, I think the 75% figure sounds rather high. In any case, it looks like the report makes U.S. policy to be less than desirable.

But here is my thought on all of this: Now that the world knows, and our government knows, that corn ethanol production is expensive and causes food shortages, how long will it take our federal government to correct this problem?