The New York Times – The inquiry into President Trump has the potential to reshape his presidency. Here’s how impeachment works. “…The Constitution permits Congress to remove presidents before their term is up if enough lawmakers vote to say that they committed “treason, bribery, or other high crimes and misdemeanors.”Only two presidents have been impeached — Andrew Johnson in 1868 and Bill Clinton in 1998 — and both were ultimately acquitted and completed their terms in office. Richard M. Nixon, resigned in 1974 to avoid being impeached….”

• See also The New York Times – How Impeachment Works and What You Need to Know About It
• CRS – Impeachment and Removal
• The Hill – Senate GOP vows to quash impeachment articles
• Roll Call – Not much changes with ‘official’ impeachment inquiry, for now – Pelosi appears to double down on approach that has fallen short of raising public support