Final answer:
Impeachment proceedings originate in the House of Representatives and are tried in the Senate, requiring a two-thirds vote for conviction.
Step-by-step explanation:
Impeachment proceedings originate in the House of Representatives, where elected officials may vote to impeach a public officer. The trial for impeachment takes place in the Senate, with the Chief Justice of the Supreme Court presiding over the proceedings. To convict an officer in an impeachment trial, a two-thirds vote is required from the Senate.