What during Reconstruction which American president faced an impeachment trial?

During Reconstruction, President Andrew Johnson faced an impeachment trial in 1868. The trial stemmed from his violation of the Tenure of Office Act, primarily for removing Edwin M. Stanton, the Secretary of War, and attempting to replace him. Johnson was acquitted by just one vote in the Senate, allowing him to remain in office. His impeachment highlighted the intense political conflicts of the Reconstruction era.