President Trump is just the fourth president to face impeachment proceedings. In 2016, The Post’s Presidential podcast examined the three presidents in that category before Trump. Here’s the second of their stories from Presidential, on Richard Nixon.

Murkowski ‘disturbed’ by McConnell’s vow of ‘total coordination’ with White House over impeachment

Subscribe to follow The Washington Post’s coverage of impeachment proceedings with this collection of episodes from across The Post’s audio programming, including "Post Reports," "Can He Do That?" and "The Daily 202's Big Idea."