On March 13, 1868, the Senate impeachment trial of President Andrew Johnson began. The House of Representatives had already impeached the president on 11 counts of trying to fire War Secretary Edwin Stanton and for violating post-war Reconstruction Acts. After a dramatic two-month Senate trial, Johnson was acquitted by a single vote.

On March 13, 1868, the Senate impeachment trial of President Andrew Johnson began. The House of Representatives had already impeached the president on 11 counts of trying to fire War Secretary Edwin Stanton and for violating post-war Reconstruction Acts. After a dramatic two-month Senate trial, Johnson was acquitted by a single vote.