Final answer:
Four presidents have faced impeachment proceedings in the House; none has been both impeached by the House and removed by the Senate.
Step-by-step explanation:
Four presidents have faced impeachment proceedings in the House; none has been both impeached by the House and removed by the Senate. In the wake of the Civil War, President Andrew Johnson faced congressional contempt for decisions made during Reconstruction. President Richard Nixon faced an overwhelming likelihood of impeachment in the House for his cover-up of key information relating to the 1972 break-in at the Democratic Party's campaign headquarters at the Watergate hotel and apartment complex. Nixon likely would have also been removed by the Senate, since there was strong bipartisan consensus for his impeachment and removal. Instead, he resigned before the House and Senate could exercise their constitutional prerogatives.