Both Clinton and Nixon faced impeachment proceedings. The House Judiciary Committee voted articles of impeachment in 1974 against Nixon, but the full House never voted on them, and the Senate never held an impeachment trial. He resigned before that — and was promptly pardoned by his successor, his former vice president, Gerald Ford, for any crimes he may have committed. Clinton was impeached by the House and went on to face a Senate trial, which fell far short of the required two-thirds vote for conviction.
Source: latimes.com – Los Angeles Times