WAUKESHA, Wis. (AP) - Mitt Romney's hitting President Barack Obama again for what the Republican presidential candidate calls "gutting welfare reform."

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Romney has released a new television advertisement accusing the Obama White House of stripping the work requirement from the nation's welfare law. It's the same charge the Republican candidate levied in a separate ad last week.

Independent fact checkers have found the premise of the ad to be false.

Obama says he's giving states the flexibility they've asked for to make welfare more efficient.

Romney was among several Republican governors who signed a letter back in 2005 asking for more flexibility.

The attack comes as both sides accuse the other of producing false advertisements.

Romney's campaign blasted a Democratic group's ad that links Romney's business career to a woman's death.