IE 11 is not supported. For an optimal experience visit our site on another browser.

Guilty verdict may give Manafort new motivation to turn on Trump

03:43

Barbara McQuade, former U.S. attorney, talks with Rachel Maddow about why the guilty verdict in the trial of Donald Trump's former campaign chairman Paul Manafort is a significant victory of Robert Mueller's prosecutors and may move Manafort to flip on Donald Trump.