Rep. Rashida Tlaib Rashida Harbi TlaibTrump attacks Omar for criticizing US: 'How did you do where you came from?' George Conway: 'Trump is like a practical joke that got out of hand' Pelosi endorses Kennedy in Massachusetts Senate primary challenge MORE (D) is calling on fellow Michigan 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) to sign on to a resolution introducing articles of impeachment against 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 after Amash tweeted Saturday that Trump's conduct rose to the "threshold" of impeachment.

In a pair of her own tweets, Rep. Rashida Tlaib (D-Mich.) commended Amash for putting "country over party" and implored him to add his name as a cosponsor to a House resolution supported by dozens of Democrats but opposed by Speaker Nancy Pelosi Nancy PelosiHoyer: House should vote on COVID-19 aid — with or without a bipartisan deal Ruth Bader Ginsburg lies in repose at Supreme Court McCarthy threatens motion to oust Pelosi if she moves forward with impeachment MORE (D-Calif.).

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"You are putting country first, and that is to be commended. We both took an oath to uphold the U.S. Constitution. Please let me know if you are interested signing on to the resolution to begin the investigation into impeachment," she wrote.

".@justinamash come find me in 1628 Longworth. I’ve got an impeachment investigation resolution you’re going to want to cosponsor," she said in a second tweet.

.@justinamash come find me in 1628 Longworth. I’ve got an impeachment investigation resolution you’re going to want to cosponsor. https://t.co/KabQTDn1Zq — Rashida Tlaib (@RashidaTlaib) May 18, 2019

You are putting country first, and that is to be commended. We both took an oath to uphold the U.S. Constitution. Please let me know if you are interested signing on to the resolution to begin the investigation into impeachment. https://t.co/f5CT3uB81d — Rashida Tlaib (@RashidaTlaib) May 18, 2019

Tlaib previously went viral shortly after taking office this year when video of her speaking at a Washington, D.C. event surfaced revealing the Democratic congresswoman threatening to "impeach the motherf-cker," referring to Trump.

Amash himself became the lone Republican in the House to call Trump's conduct outlined in 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 of his investigation into the Trump campaign and Russia impeachable, writing in a series of tweets Saturday that Attorney General William Barr Bill BarrHarris faces pivotal moment with Supreme Court battle Hillicon Valley: DOJ proposes tech liability shield reform to Congress | Treasury sanctions individuals, groups tied to Russian malign influence activities | House Republican introduces bill to set standards for self-driving cars McCarthy threatens motion to oust Pelosi if she moves forward with impeachment MORE had attempted to obscure the findings of the special counsel probe.

"Here are my principal conclusions: 1. Attorney General Barr has deliberately misrepresented Mueller’s report. 2. President Trump has engaged in impeachable conduct. 3. Partisanship has eroded our system of checks and balances. 4. Few members of Congress have read the report," Amash wrote on Twitter Saturday afternoon.

"Mueller’s report reveals that President Trump engaged in specific actions and a pattern of behavior that meet the threshold for impeachment," he added. "Mueller’s report identifies multiple examples of conduct satisfying all the elements of obstruction of justice, and undoubtedly any person who is not the president of the United States would be indicted based on such evidence."