U.S. president asking foreign leader for political help is "unprecedented," says national security expert

Lawmakers will question Acting Director of National Intelligence Joseph Maguire Thursday about a whistleblower complaint that led to a House impeachment inquiry. When that report first crossed Maguire’s desk, he would not let Congress see it. The whistleblower is an intelligence official who learned about President Trump’s call with the Ukraine president "secondhand" from "White House officials" and believed that Mr. Trump's request for dirt on Joe Biden amounted to "soliciting a foreign campaign contribution in violation of the campaign finance laws." CBS News senior national security analyst Michael Morell joins “CBS This Morning” to discuss why Mr. Trump's call with the foreign leader is "unprecedented."