‘Plenty’ is still unknown about Trump’s interactions with Putin, says former NSC staffer

Summary: Questions remain about President Trump's meetings with Russian President Vladimir Putin, as well as about Trump's broader ties to Russia. To analyze why the corresponding counterintelligence investigations are 'unprecedented,' Judy Woodruff sits down with Andrew Weiss, a former National Security Council staffer, and David Kris, previously the Justice Department's top national security official.