Sen. Joe BidenJoe BidenTop union offers backing for Ellison in DNC race John Kerry to teach at Yale on global issues Ellison needles Perez for 'unverifiable' claim of DNC support MORE (D-Del.), on a 2008 presidential campaign stop in Iowa, told his audience that he's going to be "straight up" with Americans about the genocide in Sudan.



"The next president of the United States is not going to have a chance for on the job training like this last one..." Biden said. "I warn you, if I am your president, I will do more than talk about Darfur."