- Trump's impeachment acquittal vote is all but assured. Nixon's resignation helps explain why. | The nation has only faced an official impeachment vote three times. Had Nixon’s impeachment reached fruition in the Senate, an important precedent would've been set. https://www.nbcnews.com/think/opinion/trump-s-impeachment-acquittal-vote-all-assured-nixon-s-resignation-ncna1127756 21 comments politics