After Mr. Raskin learn the cost in full, the managers departed, leaving the matter to the Senate, which deliberate to reconvene at 2:30 p.m. Tuesday to situation a summons to Mr. Trump to reply for the cost. Senators have been anticipated to formally conform to a schedule for the approaching weeks and swear an impeachment oath relationship to the 18th century to do “neutral justice.”

Mr. Trump’s new protection lawyer, Butch Bowers, was stated to be attempting to line up at the very least one extra lawyer to hitch him, in keeping with individuals accustomed to the planning. He was additionally working with Jason Miller, an adviser to Mr. Trump, on a public-relations marketing campaign.

Different elements of the trial started to come back into concentrate on Monday as effectively. Senator Patrick J. Leahy, the Senate president professional tempore, stated he would preside over the trial, assuming a job crammed final 12 months by Chief Justice John G. Roberts Jr.

The Structure states that the chief justice of the US presides over any impeachment trial of the president or vice chairman. Nevertheless it doesn’t explicitly give steerage on who ought to oversee the continuing for others, together with former presidents. Mr. Schumer stated Chief Justice Roberts was tired of reprising a time-consuming role that would insert him and the Supreme Court into the political struggle over Mr. Trump.

The position was largely ceremonial within the first impeachment trial of Mr. Trump a 12 months in the past. However because the presiding officer, Mr. Leahy, Democrat of Vermont, might situation rulings on key questions across the admissibility of proof and whether or not a trial of a former president is even allowed below the Structure. He may also retain a vote himself.

The job might even have gone to Vice President Kamala Harris, in her capability as president of the Senate. However there have been clear drawbacks for Ms. Harris in overseeing a continuing that’s all however sure to be regarded by some as an effort by Democrats to make use of their newfound energy to punish the chief of the rival political occasion.

Mr. Leahy’s presence on the dais might open Democrats to comparable fees from the appropriate, significantly if he points a contentious ruling, however officers stated there was no clear different with out the chief justice. In an announcement, Mr. Leahy was adamant he would take “terribly significantly” his trial oath to manage “neutral justice.”

Maggie Haberman contributed reporting from New York, and Emily Cochrane and Adam Liptak from Washington.