Recent days have seen a series of protests against Abdo's government amid overwhelmed hospitals and shortages of vaccines and drugs for COVID-19 patients.
Pence, who met Trump on Tuesday, wrote to Speaker Nancy Pelosi that he will not accept her request to remove Trump through a constitutional move, flouting her 24-hour notice for him to comply or have Trump impeached.
In a letter to her colleagues sent on Sunday, Pelosi said the House Democrats will introduce a resolution on Monday urging Vice President Mike Pence to "convene and mobilise the Cabinet to activate the 25th Amendment
California Congressman Ted Lieu, a Democratic member of the House Judiciary Committee, tweeted on Saturday that the article of impeachment, which has so far had 180 co-sponsors, will be brought forward