Obama calls Biden 'an outstanding' vice president in message on Twitter

President Obama tweeted a message of personal support for Vice President Biden on Thursday night, just more than a week after Biden comments on the camaign trail led to controversy.

Today marks four years since I chose @joebiden to be my running mate. Here’s to an outstanding Vice President and a great friend. –bo

— Barack Obama (@BarackObama) Aug. 24, 2012

The tweet is signed "-bo" to indicate the president sent it himself.

Criticism of Biden and rumors that he might be a hindrance to the president's reelection increased after Biden last week told a crowd in Virginia that Republicans have pledged to “unchain” Wall Street and “put y'all back in chains." The remark was criticized as race-baiting.

Obama has denied that Biden will be replaced on the presidential ticket.

On Aug. 23, 2008, then-Sen. Obama (Ill.) announced then-Sen. Biden (Del.) as his vice presidential pick. Obama's campaign announced his choice of running mate via text and email messages to supporters and then at a rally in Springfield, Ill. 

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