With the Friday subpoena issued by the special committee of the House of Representatives to former President Donald Trump to both hand over documents and appear for personal testimony before the committee, several constitutional questions have been raised. The committee was tasked by House Speaker Nancy Pelosi to investigate the events of January 6, 2021, when several people entered the United States Capitol during a protest over the outcome of the 2020 presidential election. All nine committee members voted to issue the subpoena, and threatened to charge Trump with contempt of Congress if he fails to comply. Considering that the...