What is the name of the president who was impeached but escaped by one vote and what was his offense?

President Andrew Johnson was the President who escaped impeachment by one vote. The presiding justice, Chief Justice Salmon P. Chase, charged Johnson with eleven counts of violating a law of congress. President Johnson had defied the Tenure of Office Act and removed Secretary of War, Edwin M. Stanton from office. Johnson was found innocent, but only one vote separated this decision. The conscientious congressmen who voted "not guilty" were concerned that the nation's system of checks and balances would be destroyed if Congress were able to impeach the President because they did not agree.