How many U.S. Presidents have been impeached?

Impeachment is a constitutional process in the United States through which a sitting president can be charged with misconduct. To date, two U.S. Presidents have been impeached by the House of Representatives: Andrew Johnson in 1868 and Bill Clinton in 1998. Additionally, Donald Trump was impeached twice during his presidency, in 2019 and again in 2021. However, he was acquitted by the Senate both times and therefore does not count among those who were formally removed from office through impeachment. The process of impeachment serves as a critical check on presidential power, allowing Congress to investigate and hold the president accountable for alleged violations of law or abuses of power. Understanding the impeachment process and its historical context is vital for grasping how it operates within the framework of U.S. governance.