Updated at 6:30 p.m. ET
The House of Representatives has delivered articles of impeachment against President Trump to the Senate, which is expected to begin a trial next week.
Earlier in the day, House Speaker Nancy Pelosi named seven Democratic members of Congress as the managers who will argue the case for impeachment.
Those managers carried the articles to the Senate on Wednesday evening.
"What is at stake here is the Constitution of the United States," Pelosi said in a press conference announcing the managers.
Pelosi appointed Reps. Adam Schiff, Jerry Nadler, Zoe Lofgren, Val Demings, Hakeem Jeffries, Sylvia Garcia and Jason Crow. Pelosi said Schiff will take the lead.
"The emphasis is on litigators. The emphasis is on comfort level in the courtroom. The emphasis is making the strongest possible case to protect and defend our Constitution, to seek the truth for the American people," Pelosi said in a Wednesday press conference.
The House voted earlier in the day on a resolution to transmit the articles and confirm the impeachment managers. It was 228-193, largely along party lines.
"This is as serious as it gets for any of us," Pelosi said on the House floor. But House Minority Leader Kevin McCarthy, R-Calif., called impeachment "a blunder" and "not a moment this body should be proud of."
The seven managers bring a diverse range of experience. Schiff and Nadler led the impeachment process in the House. Lofgren is taking part in her third impeachment process; she was a staffer when the House Judiciary Committee voted out articles of impeachment against President Richard Nixon, and a committee member during President Bill Clinton's and Trump's impeachment. Demings is a former Orlando chief of police and is also a member of the House Intelligence Committee; Garcia is a former Houston municipal judge; Jeffries is a former corporate lawyer; and Crow is a former Army Ranger who served in Iraq and Afghanistan and was a co-author of a letter making the case for Congress to begin impeachment proceedings.

9(MDAxOTAwOTE4MDEyMTkxMDAzNjczZDljZA004))