An Impeachable Offense? Questions Swirl as Trump Accused of Sharing Top Secret Intel with Russians

Senior White House officials were apparently so alarmed by President Trump's disclosures of classified intelligence to Russia that they called the CIA and National Security Agency afterward to warn them of what had happened. Officials said they were concerned Trump's comments would jeopardize a critical source of intelligence on the Islamic State. We speak to Columbia Law School lecturer Scott Horton and Stanford professor Larry Diamond of the Hoover Institution. Diamond served as senior adviser to the Coalition Provisional Authority in Baghdad.