In an interview with The Washington Post's editorial board, Sen. Joe Biden (D-Del.) asserted that he is more prepared to be president than any other candidate, disputed the notion that governors are better suited for the White House than senators and warned that Pakistan is a potentially bigger threat than Iran. Biden also stumbled through a discourse on race and education, leaving the impression that he believes one reason that so many District of Columbia schools fail is the city's high minority population. His campaign quickly issued a statement saying he meant to indicate that the disadvantages were based on...