Obama tweets 'Born in the USA' following Romney birth certificate joke

President Obama tweeted the Bruce Springsteen song "Born in the U.S.A." on Friday, apparently in response to Mitt Romney joking about his birth certificate.

Song of the day: Born in the U.S.A. OFA.BO/irL3ZV

— Barack Obama (@BarackObama) August 24, 2012

The Springsteen tweet followed a series of tweets quickly responding to Romney's birth certificate joke at a campaign event in Michigan. 

"No one's ever asked to see my birth certificate," Romney said earlier in the day. "They know that this is the place that we were born and raised." 

The Obama campaign called it a "decision to directly enlist himself in the birther movement.

The so-called "birther" movement is a conspiracy questioning the location of Obama's birth.

Obama's campaign is already fundraising off the comment.

Now's the time to say you stand with President Obama in this election—and against false, divisive attacks: OFA.BO/NaVdL4

— Barack Obama (@BarackObama) August 24, 2012

Today's a good day to buy one of our Made in the USA mugs—with the President's birth certificate on the back: OFA.BO/hYYAHH

— Barack Obama (@BarackObama) August 24, 2012

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