The Constitution says presidents can be impeached for “Treason, Bribery, or other high Crimes and Misdemeanors,” but it does not define “high crimes and misdemeanors.”

In his testimony, Harvard Law School constitutional law professor Noah Feldman said the phrase means this: «Abuse of the office of the presidency for personal advantage or to corrupt the electoral process or to subvert the national security of the United States.”

“High,” Feldman said, means “connected to the office of the presidency.” He emphasized that the “abuse of office for personal gain or advantage,” like the kind he alleges President Trump committed, is the kind of high crime or misdemeanor that was “familiar to the Framers” of the Constitution.

Watch more: