Republican roadblocks and a civics lesson: key moments in the U.S. House impeachment debate

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 contentious back-and-forth between Democratic and Republican lawmakers ahead of the historic vote: A REPUBLICAN ROADBLOCK

Shortly after the House came into session on Wednesday morning, Republican lawmakers made a series of motions that delayed debate on the two counts of impeachment. House Republican Leader Kevin McCarthy introduced a resolution accusing Democratic Representatives Adam Schiff and Jerrold Nadler, respectively the chairmen of the Intelligence and Judiciary committees that led the impeachment hearings, of "willfully and intentionally" violating House rules and exceeding their powers. McCarthy's motion failed, and the debate began shortly thereafter. A NATIONAL CIVICS LESSON

House Speaker Nancy Pelosi opened six hours of impeachment debate by saying that "today is a national civics lesson, though a sad one." "I solemnly and sadly open the debate on the impeachment of the president of the United States. If we do not act now, we would be derelict in our duty," Pelosi said, calling the U.S. Congress the "custodians of the Constitution."

"It is a matter of fact that the president is an ongoing threat to our national security and the integrity of our elections, which is the basis of our democracy," Pelosi said. INEVITABILITY

Representative Doug Collins, the top Republican on the Judiciary Committee, said Democrats had begun plotting Trump's impeachment even before his dealings with Ukraine, which form the core of the impeachment case, became public in September. "To Democrats, it's politics, not facts, that matter," Collins said on the House floor.

"Today is going to be a lot of things. What it is not, is fair," Collins said. CANNOT WAIT

Nadler, the Judiciary Committee chair, said Trump's actions threatened the integrity of the November 2020 presidential and congressional elections. "Congress cannot wait until the next election to address this conduct," he said.

There are currently 15 candidates vying for the Democratic Party's nomination to take on Trump in November 2020. Five of them are U.S. senators who will act as jurors in the impeachment trial.