The timeline Pelosi outlines in the letter means the House could move forward with impeachment on Wednesday this week, one week after the deadly riots at the US Capitol by a mob of the president's supporters.
If the vice president declines to act, the House will then proceed with impeachment legislation, Pelosi said in the letter.
In a letter sent to her Democratic colleagues Sunday, Speaker of the House Nancy Pelosi said impeachment proceedings will start this week if Vice President Mike Pence does not invoke the 25th Amendment.
Speaker of the House Nancy Pelosi said in a letter Sunday that impeachment proceedings will begin this week if Vice President Mike Pence does not respond to calls to invoke the 25th Amendment.
Pelosi said the House will first seek to pass a resolution calling on Pence to activate the 25th Amendment, which would allow the vice president and a majority of the Cabinet to declare President Donald Trump unable to fulfill his duties.