Former Massachusetts Gov. William Weld William (Bill) WeldRalph Gants, chief justice of Massachusetts supreme court, dies at 65 The Hill's Campaign Report: Biden visits Kenosha | Trump's double-voting suggestion draws fire | Facebook clamps down on election ads Biden picks up endorsements from nearly 100 Republicans MORE (R), who is challenging President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE in the 2020 Republican presidential primary, says the country would be better off if Trump resigned immediately.

“If he had the self-awareness that Richard Nixon had, sense of shame is too strong a word, but self-awareness is probably too soft a word, he would resign,” Weld said while appearing on MSNBC.

ADVERTISEMENT

“We would be much better off with a President Mike Pence Michael (Mike) Richard PenceThe Hill's 12:30 Report: Ginsburg lies in repose Buttigieg stands in as Pence for Harris's debate practice Trump argues full Supreme Court needed to settle potential election disputes MORE than a President Donald Trump,” he added.

Weld, the 2016 vice presidential nominee for the Libertarian Party, entered the 2020 presidential race last week.

“It is time to return to the principles of Lincoln — equality, dignity, and opportunity for all," he said at the time. "There is no greater cause on earth than to preserve what truly makes America great. I am ready to lead that fight.”

Weld is the first Republican to challenge Trump for the party's nomination, though Maryland Gov. Larry Hogan (R) and former Ohio Gov. John Kasich (R) have also been floated as possible challengers.

Following the publication of a redacted version of special counsel Robert Mueller Robert (Bob) MuellerCNN's Toobin warns McCabe is in 'perilous condition' with emboldened Trump CNN anchor rips Trump over Stone while evoking Clinton-Lynch tarmac meeting The Hill's 12:30 Report: New Hampshire fallout MORE's report on Thursday, there have been calls by some Democrats to impeach Trump. House Democrats are already in the middle of a series of investigations into the president.

Trump has said he would fight against impeachment in the Supreme Court.