Former Arkansas Gov. Mike Huckabee said Monday that birthers are wasting "time and energy" with their insistence that President Obama was not actually born in the United State.

Speaking on ABC News' "Good Morning America," Huckabee said that he had massive disagreements with Barack Obama's policies, but that he felt no personal enmity toward the president. Huckabee also said that he believed birther conspiracies were "nonsense," partially because Obama had faced tough competition on his road to the White House in 2008.

"If there was any shred of truth to it, Hillary Clinton and her wonderful investigative opposition research machine would have found it and would have used it," Huckabee said. "For Republicans to even be bringing it up, I think it's a waste of energy and time."

Huckabee also admitted that Obama would be very difficult to beat in 2012, saying that he didn't think it would be a good idea to be the first GOP candidate out of the starting gates, but that he was "seriously considering making a run for it."

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