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's 2020 campaign manager accused Rep. Justin Amash Justin AmashInternal Democratic poll shows tight race in contest to replace Amash Centrist Democrats 'strongly considering' discharge petition on GOP PPP bill On The Trail: How Nancy Pelosi could improbably become president MORE (R-Mich.) of "grandstanding" for his calls to impeach the president.

“If Phony @justinamash were a TRUE libertarian, he wouldn’t stand for abuse of FBI power, spying, & bogus dossiers funded by political foes and fed to secret FISA courts,” Trump campaign manager Brad Parscale Bradley (Brad) James ParscaleMORE tweeted. “He is just another Grandstanding Swamp Creature auditioning for the approval of the liberal media.”

If Phony @justinamash were a TRUE libertarian, he wouldn’t stand for abuse of FBI power, spying, & bogus dossiers funded by political foes and fed to secret FISA courts. He is just another Grandstanding Swamp Creature auditioning for the approval of the liberal media. — Brad Parscale (@parscale) May 29, 2019

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Amash made headlines when he said 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 details “impeachable offenses,” sparking backlash from fellow members of the GOP caucus and Trump.

The Michigan Republican and member of the House Freedom Caucus resumed his criticism of Trump following Wednesday morning remarks by Mueller reaffirming that his investigation did not result in an exoneration. "The ball is in our court, Congress," Amash tweeted on Wednesday.

Tuesday evening, in his first town hall since the remarks, Amash received a standing ovation but also encountered a handful of questioners angry at his criticism of Trump.

Parscale’s criticism of Amash echoes that of Amash’s fellow libertarian-leaning member of Congress, Sen. Rand Paul Randal (Rand) Howard PaulRand Paul says he can't judge 'guilt or innocence' in Breonna Taylor case Overnight Health Care: Health officials tell public to trust in science | Despair at CDC under Trump influence | A new vaccine phase 3 trial starts Health officials tell public to trust in science MORE (R-Ky.), who said that Mueller’s investigation was “the antithesis of libertarianism.”

Counselor to the President 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 dismissed Amash, who has declined to rule out a third-party presidential bid in 2020, on Wednesday.

"Amash can do what he wants," Conway told reporters. "I’m sure you’ll continue to cover his comments."

The congressman has already drawn a primary challenger and Michigan’s wealthy DeVos family said it will end its financial support for him, although they said it was a decision made before Amash’s remarks on impeachment.

The House Freedom Caucus also voted to condemn Amash's comments.