The 11th Hour with Brian Williams 09/15/16

Trump again refuses to say Obama born in U.S.

In an explosive Washington Post report, Donald Trump again refused to say if Pres. Obama was born in America. Clinton blasted Trump's comments and Team Trump is pushing back. MSNBC's Brian Williams talks to Robert Costa, Nicolle Wallace, & Kristen Welker. ... more Duration: {{video.duration.momentjs}}