 Washington (CNN) Donald Trump came under fire Friday morning for his handling of a question at a town hall about when the U.S. can "get rid" of Muslims, for failing to take issue with that premise and an assertion that President Barack Obama is Muslim. The incident recalls Trump's 2011 quest to challenge Obama on where he was born, which ended with Obama releasing his long-form birth certificate. ADVERTISEMENT The first man stood and declared: 
 
 “We have a problem in this country, it’s called Muslims. The campaign rally in Rochester drew about 3,000 people and was Trump’s first public event since the GOP presidential debate in Simi Valley, Calif., on Wednesday night. We know our current president is one — you know he’s not even an American. We know he’s not even an American,” said a questioner at a town hall in New Hampshire. “Make them vicious, violent, terrible questions,” Trump said. "Anyway, we have training camps growing where they want to kill us," the man, wearing a "Trump" T-shirt, continued. That’s my question, when can we get rid of them?” 
 
 Trump responded: “We’re going to be looking at a lot of different things, a lot of people are saying bad things are happening, we’re going to be looking at that and plenty of other things.” 
 
 A second man stood and made the same claim. That’s my question, when can we get rid of them?” 
 
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 “A lot of people are saying that and a lot of people are saying that bad things are happening out there. The real estate mogul did not correct the questioner about his claims about Obama before moving on to another audience member. Democratic front-runner Hillary Clinton hit back at Trump on Twitter, tweeting: "Donald Trump not denouncing false statements about POTUS & hateful rhetoric about Muslims is disturbing, & just plain wrong. “She did a terrible, terrible job,” Trump said. But Corey Lewandowski, Trump's campaign manager, later told CNN that the candidate did not hear the question about Obama being a Muslim. “I applaud the gentleman who stood and said Obama is a Muslim born abroad and about the military camps, everyone knows that,” he said. "The media want to make this an issue about Obama, but it's about him waging a war on Christianity." Falsehoods persist about Obama's background 
 
 Obama, who has spoken openly about his Christian faith, was born to an American mother and Kenyan father in Hawaii. But Trump has been one of the leading skeptics of Obama's birthplace, saying he did not know where Obama was born as recently as July 
 
 A recent CNN/ORC poll found 29% of Americans believe Obama is a Muslim, including 43% of Republicans. Their religious liberties are at stake," a Trump campaign spokeswoman said in an email.
– Donald Trump, apparently forgetting about the time he pressured the president of the United States into producing his birth certificate, failed to correct a man at a town hall event last night who claimed President Obama is a Muslim—and not an American. The questioner at the Rochester, NH, event described Muslims as a "problem" and went on to say, "Our current president is one. We know he's not even an American. We have training camps growing where they want to kill us. That's my question: When can we get rid of them?" Trump responded: "A lot of people are saying that and a lot of people are saying that bad things are happening out there. We're going to be looking at that and a lot of different things," Politico reports. When another man stood and said he wanted to "applaud the gentleman who stood and said Obama is a Muslim born abroad and about the military camps," Trump said, "Right" before moving on, the Hill reports. Hillary Clinton calls Trump's failure to denounce the remarks "disturbing," while DNC Chairwoman Debbie Wasserman Schultz calls the candidate's behavior "horrendous" but "unsurprising," saying "Trump's racism knows no bounds," CNN reports. Trump's campaign manager tells CNN that Trump didn't hear the remark about Obama being Muslim, and that the real issue is the president's "war on Christianity." (A recent poll found that 43% of Republicans still think Obama is a Muslim, which rises to 66% among Trump supporters.)