On February 24, 1868, President Andrew Johnson was impeached by the US House of Representatives. Johnson had violated the Tenure of Office Act, which limited the President's power to remove cabinet officials. His trial was then brought to the Senate. In OTL, on May 26, the Senate voted 35 guilty and 19 not guilty. This fell short of the two-thirds majority required to impeach him. If just one more Senator had voted guilty, Johnson would have been removed.