“I agree with her on one thing: The single greatest problem the world has is nuclear armament, nuclear weapons ― not global warming like you think and your president thinks,” he said.
Trump has repeatedly questioned Obama’s legitimacy as president by suggesting that Obama was not born in the United States.
Dan Pfeiffer, a former top aide to Obama, brushed off the comment.
Several people took to Twitter to call out the outrageousness of Trump’s claim.
Trump addressed the comments in the spin room after the debate, saying Obama was “everybody’s president.”
Editor’s note: Donald Trump regularly incites political violence and is a serial liar, rampant xenophobe, racist, misogynist and birther who has repeatedly pledged to ban all Muslims — 1.6 billion members of an entire religion — from entering the U.S.