Morning Joe 12/01/15

Trump's 9/11 claims scrutinized

Mark Halperin reads portion of an op-ed written by Fred Siegal and featured in the New York Post a few days after the attacks of September 11, 2001. The article seems to verify Donald Trump's claims about Muslim-Americans in New Jersey celebrating the attacks. Halperin says the article "is not proof but interesting." ... more Duration: {{video.duration.momentjs}}