McCaskill: Bolton could make GOP senators 'wobbly' on impeachment

Fmr. Missouri Senator Claire McCaskill joins Brian Williams to discuss how a possible impeachment testimony from Donald Trump's former national security adviser John Bolton could sway Republican senators to back impeachment. McCaskill says Bolton is the person who could make GOP senators "wobbly" on backing impeachment, "especially if he doesn't hold back"Nov. 21, 2019