U.S. Democratic Presidential Candidates on Subsidies for Biofuels

Christopher Dodd, Barack Obama, Joe Biden and Hillary Clinton describe how they would address subsidies, conservation, and biofuels at "The Des Moines Register Presidential Debates" in Johnston, Iowa on December 13, 2007. This forum featured six of the Democrat candidates for President: Delaware Sen. Joe Biden; New York Sen. Hillary Clinton; Connecticut Sen. Christopher Dodd; former North Carolina Sen. John Edwards; Illinois Sen. Barack Obama; New Mexico Gov. Bill Richardson.