Today at the Iowa National Security Action Summit, an attendee asked Donald Trump what he thinks is “the most prominent lie that the American public is being propagandized in regards to national security.” Trump responded by arguing that Obamacare “was a total lie,” before saying that “Muslims can come in but other people can’t; Christians can’t come into this country but Muslims can.”

“Something has got to be coming down from the top,” Trump said. “Muslims can come in but Christians can’t, and the Muslims aren’t in danger but the Christians are.”

Earlier in the speech, Trump said that he learned this “fact” from fellow summit speaker Ann Corcoran, an activist who believes President Obama is “literally swapping out the people” of the US through Muslim immigration, which she believes should be banned.