WATCH: Obama Ad Slams Romney As “Birther-In-Chief”

Source: Lindsey Boerma / CBS News

Seizing on an uncharacteristic joke Mitt Romney made Friday about the president’s birth certificate, the Obama campaign is out with a new web ad arguing, “America doesn’t need a Birther-in-Chief.”

WATCH: Mitt Romney Cracks A Birther Joke: No One’s Ever Asked To See My Birth Certificate …

“Holding out hope Romney had a vision for the middle class? Think again,” a voice in the ad says, introducing a clip of the presumptive Republican nominee at a rally Friday in his home state of Michigan. While celebrating his roots, Romney abandoned his typically dogged refusal to engage “unfounded conspiracy theories,” as the ad calls them, that the president wasn’t born in the United States.

“I love being home in the place where Ann and I were born and raised, where both of us were born,” Romney said Friday. “Ann was born in Henry Ford Hospital; I was born in Harper Hospital. No one’s ever asked to see my birth certificate. They know that this is the place that we were born and raised.”

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