Is Treason Impeachable Offense?

Article II, Section 4: The President, Vice President and all civil Officers of the United States, shall be removed from Office on Impeachment for, and Conviction of, Treason, Bribery, or other high Crimes and Misdemeanors.

What are the impeachable offense?

Impeachable offenses

The Constitution limits the offenses to the following: culpable violation of the Constitution, treason, bribery, graft and corruption, other high crimes, or betrayal of public trust.

How does the Constitution define treason?

Article III, Section 3, Clause 1: Treason against the United States, shall consist only in levying War against them, or in adhering to their Enemies, giving them Aid and Comfort. No Person shall be convicted of Treason unless on the testimony of two Witnesses to the same overt Act, or on Confession in open Court.