Congress’ Democratic leaders on Thursday demanded President Trump’s removal from office — vowing a swift impeachment, if necessary — in an effort to stop him from unleashing more chaos in his final, rage-filled days.

Both House Speaker Nancy Pelosi and Senate Minority Leader Charles E. Schumer called on Trump’s Cabinet to oust him by invoking the 25th Amendment, which was designed to remove a president who is incapacitated or unwell. They warned that the House would quickly consider impeachment articles if that does not happen.

Schumer said he and Pelosi tried to call Vice President Mike Pence Thursday morning to urge him to follow the 25th Amendment, but Pence would not take their call.

“While there are only 13 days left, any day could be a horror show for America,” Pelosi said, calling Trump “a very dangerous person who should not continue in office” and adding: “This is urgent, an emergency of the highest magnitude.”

Dozens of House Democrats, including some from conservative districts, echoed the call for a second impeachment and at least one Republican called for Trump’s removal by the Cabinet.