The house of representatives voting to impeach the president is an activity that is performed by which of the following branches of government?

The
Legislative Branch
, specifically the The
House of Representatives
has the power to impeach a federal government official, including the President. "impeach" means to pass a bill which lists the charges against the official involved which they believe warrant his removal from office. If a simple majority of the House votes to impeach, the

Senate
holds a trial, then votes on whether to convict or acquit (find not guilty). A two-thirds majority is required to convict.