When Lincoln was assassinated and Andrew Johnson became President, a fraught time in America became perilous. Congress was divided over how Reconstruction should be accomplished, and the question of ...

For the first time in history, the United States House of Representatives impeached a sitting president, Democrat Andrew Johnson. Now, Johnson faced trial before the U. S. Senate.

Sources: NCC Staff. "The Man Whose Impeachment Vote Saved Andrew Johnson." National Constitution Center.