WASHINGTON - US President Barack Obama on Monday reminded Americans that his likely Republican opponent in the November election had been lukewarm about targeting Osama bin Laden, seeking to gain political advantage from the killing of the al-Qaida leader.

Obama accused Romney, the presumptive Republican presidential nominee, of being inconsistent on whether he would have ordered bin Laden's killing had he been president.

"I said that we'd go after bin Laden if we had a clear shot at him and I did," Obama said during a White House press conference. "If there are others who've said one thing, now suggest they'd do something else, then I'd go ahead and let them explain," he said, without mentioning Romney by name.

Obama's re-election campaign issued a video last week that highlighted Romney, in reference to bin Laden, remarking several years ago that it was "not worth moving heaven and earth spending billions of dollars just trying to catch one person."

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