We thought Joe Biden couldn't top--or bottom--the appalling gaffe of calling a 2010 White House bill signing ceremony "a big f___ing deal." But he just did it. In Danville, Virginia this week, Biden told a largely black audience the Republicans were going to "put y'all in chains." Now, of course, his staff is backpedaling furiously. He meant the banks. He was talking about banking de-regulation, they bleat frantically. Sure he was.