Conservative lawyer and prominent Trump critic George Conway George Thomas ConwayGeorge Conway hits Trump on 9/11 anniversary: 'The greatest threat to the safety and security of Americans' Susan Collins faces battle of lifetime in Maine Conway hails Trump as 'champion' of women MORE suggested this week that the House may need to impeach President Trump Donald John TrumpHR McMaster says president's policy to withdraw troops from Afghanistan is 'unwise' Cast of 'Parks and Rec' reunite for virtual town hall to address Wisconsin voters Biden says Trump should step down over coronavirus response MORE again.

Conway wrote in a Washington Post opinion piece Monday that Trump’s firing of two witnesses who testified in the House impeachment inquiry could justify a second impeachment.

The president removed Lt. Col. Alexander Vindman Alexander VindmanImpeachment witness Alexander Vindman calls Trump Putin's 'useful idiot' The Hill's Morning Report - Sponsored by The Air Line Pilots Association - Trump, Biden renew push for Latino support Strzok: Trump behaving like an authoritarian MORE and U.S. Ambassador to the European Union Gordon Sondland Gordon SondlandGOP chairman vows to protect whistleblowers following Vindman retirement over 'bullying' Top Democrat slams Trump's new EU envoy: Not 'a political donor's part-time job' Trump names new EU envoy, filling post left vacant by impeachment witness Sondland MORE from their positions Friday, while reassigning Vindman’s brother Lt. Col. Yevgeny Vindman.

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Conway wrote that Trump is following Rep. Adam Schiff Adam Bennett SchiffOvernight Defense: Top admiral says 'no condition' where US should conduct nuclear test 'at this time' | Intelligence chief says Congress will get some in-person election security briefings Overnight Defense: House to vote on military justice bill spurred by Vanessa Guillén death | Biden courts veterans after Trump's military controversies Intelligence chief says Congress will get some in-person election security briefings MORE’s (D-Calif.) prediction that the president will “do what’s right for Donald Trump” instead of “what is right for this country.”

“And he will do it again,” Conway said. “He did do it again by firing the Vindmans and Sondland. He’s telling us he will do it again. And no one can seriously doubt it, even those who voted to acquit.”

Conway, who is married to White House counselor Kellyanne Conway Kellyanne Elizabeth ConwayGeorge Conway hits Trump on 9/11 anniversary: 'The greatest threat to the safety and security of Americans' Juan Williams: Swamp creature at the White House Oversight Democrats press for probe into possible Hatch Act violations MORE criticized Sen. Susan Collins Susan Margaret CollinsThe Hill's Campaign Report: Biden asks if public can trust vaccine from Trump ahead of Election Day | Oklahoma health officials raised red flags before Trump rally Gideon leads Collins by 12 points in Maine Senate race: poll Senate leaders quash talk of rank-and-file COVID-19 deal MORE (R-Maine) for voting last week to acquit Trump and saying she hoped Trump had learned “a pretty big lesson” from impeachment. Collins later said she was being “aspirational" with her remarks.

Conway said in Monday's op-ed it was a “lofty aspiration –– that the president refrain from committing an impeachable defense.”

“As we’ve now seen, his rage leads to retribution and misconduct, which beget more criticism, and more investigation, and even more rage, retribution and misconduct,” Conway wrote. “So America beware: The state is Trump, and he’s very, very angry. We might, indeed, have to do it again.”

The Senate acquitted Trump on both articles of impeachment last week.