'Civics lesson' or 'sham trial?' Key moments in the U.S. House impeachment debate

U.S. Speaker of the House Nancy Pelosi (D-CA) wields the Speaker's gavel as she presides over the final of two House of Representatives votes approving two counts of impeachment against U.S. President Donald Trump in the House Chamber of the U.S. Capitol in Washington, U.S., December 18, 2019. REUTERS/Jonathan Ernst

WASHINGTON (Reuters) - A bitterly divided U.S. House of Representatives engaged in an impeachment debate before historic votes on two charges accusing President Donald Trump of abusing his power and obstructing Congress.

Here are some highlights from the back-and-forth between Democratic and Republican lawmakers before the vote: