![PBS NewsHour - Segments show](https://d3dthqtvwic6y7.cloudfront.net/podcast-covers/000/082/426/small/pbs-newshour-segments.png)
Summary: John Carlin, who previously served as the top national security official at the Justice Department, joins Judy Woodruff to discuss why he finds the details of President Trump's call with Ukrainian President Volodymyr Zelenskiy so disturbing, and what it would mean if White House officials tried to suppress that information.