Who is charged with impeachment and why?

In the United States, the House of Representatives is charged with the impeachment process. Impeachment is a formal accusation against a sitting president or other federal officials for misconduct, which can include treason, bribery, or high crimes and misdemeanors. If the House votes to impeach, the case then moves to the Senate for a trial, where senators determine whether to convict and remove the official from office.