Anthony Scaramucci Anthony ScaramucciFormer DeVos chief of staff joins anti-Trump group Scaramucci to Lemon: Trump 'doubling down' on downplaying virus 'should scare' viewers Sunday shows - Leaked audio of Trump's sister reverberates MORE said in an interview on Tuesday that President Trump Donald John TrumpFederal prosecutor speaks out, says Barr 'has brought shame' on Justice Dept. Former Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick MORE is mentally unstable and Cabinet officials should consider using the 25th Amendment to expel him from office.

The Trump ally-turned-critic, who briefly served as White House communications director, was asked by radio host Bill Press, who is an opinion contributor for The Hill, whether he agreed with conservative lawyer George Conway George Thomas ConwayGeorge and Kellyanne Conway honor Ginsburg Lincoln Project releases new ad blasting Trump as 'a horrible role model' George Conway hits Trump on 9/11 anniversary: 'The greatest threat to the safety and security of Americans' MORE that people should raise questions about the president's mental stability and that officials should consider invoking the 25th Amendment.

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“A thousand percent,” Scaramucci replied. “I don't understand how elected public servants of the longest-standing Republican democracy in existing world history, a 243-year-old Republican democracy could have this sort of full-blown insanity on display and not act.”

“It has to really make you worry about the state of the country and the overall cowardice of leadership,” Scaramucci continued.

Scaramucci’s remarks are the latest development in his burgeoning feud with Trump, which has spiraled since the former White House aide criticized Trump’s trip to visit victims of the recent mass shooting in El Paso, Texas, earlier this month.

Scaramucci, who worked in the White House for 11 days before being ousted by Trump, has in recent weeks frequented television programs and Twitter to register his criticisms of Trump and his administration after previously defending his former boss.

Trump, in turn, has lashed out at his former ally, calling him “totally incapable” and attacking him as a “mental wreck.”

Scaramucci predicted in a recent CNN interview that “a trove” of former administration officials would emerge to label Trump unstable.

Conway, who is the husband of White House counselor and top Trump adviser Kellyanne Conway Kellyanne Elizabeth ConwaySpecial counsel investigating DeVos for potential Hatch Act violation: report George and Kellyanne Conway honor Ginsburg Trump carries on with rally, unaware of Ginsburg's death MORE, has been a frequent critic of Trump on social media and in op-eds.

Last week, George Conway on Twitter encouraged White House aides to take Trump to Walter Reed Medical Center and to “convene the cabinet under Section 4 of the Twenty-fifth Amendment.”

The 25th Amendment allows for the removal of a president if the vice president and a majority of Cabinet secretaries agree in writing that the commander in chief is “unable to discharge the powers and duties of his office.”