Article One of the United States Constitution
This power, which is analogous to the bringing of criminal charges by a grand jury, has been used only rarely.  The House of Representatives has initiated impeachment proceedings 62 times since 1789, and nineteen federal officials have been formally impeached as a result, including: three Presidents (Andrew Johnson, Bill Clinton, and Donald Trump), one Cabinet Secretary (William W. Belknap), one Senator (William Blount), one Supreme Court Associate Justice (Samuel Chase), and fourteen federal judges.