But Speaker Nancy Pelosi signaled after the evening’s proceedings that she may hold up the delivery of those articles to the other side of the Capitol until Senate Majority Leader Mitch McConnell addresses Democrats’ concerns regarding a trial biased in the White House’s favor.

“So far we haven’t seen anything that looks fair to us,” Pelosi told reporters at a news conference, and senior Democratic aides said the House was “very unlikely” to take the steps necessary to send the articles to the Senate until at least early January.

Trump lashed out at the potential delay, tweeting Thursday: “‘The Senate shall set the time and place of the trial.’ If the Do Nothing Democrats decide, in their great wisdom, not to show up, they would lose by Default!”

He also wrote that that Pelosi “feels her phony impeachment HOAX is so pathetic she is afraid to present it to the Senate, which can set a date and put this whole SCAM into default if they refuse to show up! The Do Nothings are so bad for our Country!”

The president’s posts, however, incorrectly characterize the next steps in the impeachment process. Though the Constitution gives the Senate the “sole power” to try impeachments, it is silent on how quickly the House must transmit impeachment articles that it adopts.

Rather, Congress is now in a constitutional gray area, with little guidance on what must come next, and Democrats are seizing upon that ambiguity to increase Senate Minority Leader Chuck Schumer’s leverage as he negotiates with McConnell.

It is unclear what authority Trump was quoting regarding the Senate’s power to set the time and place of an impeachment trial, but past precedent and procedures require the Senate to quickly convene a trial only once presented with articles by the House.

House Democrats have drawn their position based in part on discussions and public advice from constitutional lawyers who have argued that the chamber is under no obligation to transmit articles of impeachment to a Senate whose leader has pledged to tilt the trial toward the president.