Vice President Joe Biden is currently under fire for adopting a drawl and telling a group of black supporters that Republicans “gonna put ya’ll back in chains.” But this is not the first time the vice president has been dogged by offensive remarks. ONE. Biden kicked off his 2007 White House run by condescending to his current running mate, saying that then-Sen. Barack Obama was the “first mainstream African-American who is articulate and bright and clean and a nice-looking guy.” He later apologized for the incident—but his penchant for crossing the line stuck with him on the campaign trail. TWO....