On December 18, 2019, Donald Trump became the third president in US history to be impeached by the House of Representatives. He was later acquitted by the Senate. In over two hundred years Congress has gathered only a handful of times to debate what makes an impeachable offense. What events led to Trump’s impeachment? How does the impeachment process work? What other presidents have been impeached, and why? Learn the history, mechanics, and milestone events behind impeachment, and discover how the most recent one may affect US politics for years to come.