Sanders on Stephen Miller becoming White House chief of staff: 'I'm not worried'

Sen. Bernie Sanders (I-Vt.) on Sunday said he's "not worried" about Stephen Miller becoming President Trump's new White House chief of staff. "Meet the Press" host Kristen Welker pointed out Sanders's history of criticizing Miller and asked if he could see himself working with him. Sanders said he believes Trump is "mentally unbalanced, erratic, but...