Saturday Is Old Radio Day: You Are There- "The Impeachment of Andrew Johnson" (1949)

About the effort to impeach:

The impeachment and trial of Andrew Johnson had important political implications for the balance of federal legislative–executive power. It maintained the principle that Congress should not remove the President from office simply because its members disagreed with him over policy, style, and administration of the office. It also resulted in diminished presidential influence on public policy and overall governing power, fostering a system of governance which Woodrow Wilson referred to in the 1870s as "Congressional Government". Johnson remained the only U.S. president to have been impeached and faced a senate trial for over a century, until Bill Clinton became the second in 1998