Question

In what body must the impeachment of a federal official begin?

Answer 1

Actually, the senate tries the president, but the Impeachment happens in the House of Representatives

Answer 2

The answer is "House of Representatives".

The House of Representatives is the place impeachment of a federal government official starts. The House has the ability to denounce, yet the Senate chooses whether or not to expel the authority from office in the event that he or she is arraigned by the House.  

Impeachment is the first of a few stages required to expel an administration official from office. The indictment procedure has been utilized rarely in the United States—at either the government or state level—and even less so in Britain, where the legitimate idea was first made and utilized. In any case, impeaching a sitting president or government official is not really new, and has happened a few times in U.S. history.