A Republican congressman from Michigan said President Donald Trump engaged in "impeachable conduct" in a tweet Saturday, having reached the conclusion after reading special counsel Robert Mueller's report.

In a series of tweets from his verified Twitter account, U.S. Rep. Justin Amash, who is an attorney and represents Michigan's 3rd congressional district, said the report, which was released in April, revealed that various actions under the president "meet the threshold for impeachment." In addition, Amash said U.S. Attorney General William Barr deliberately misrepresented Mueller's report.

Amash is the first Republican in Congress to say Trump's actions are impeachable.

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Amash said in a tweet: "I offer these conclusion only after having read Mueller's redacted report carefully and completely, having read or watched pertinent statements and testimony, and having discussed this matter with my staff, who thoroughly reviewed materials and provided me with further analysis."

He said impeachment does not require that a crime has been committed, but instead "it simply requires a finding that an official has engaged in careless, abusive, corrupt, or otherwise dishonorable conduct."

Amash also said that a few members of Congress read the report, and some made partisan affiliation-based conclusions.

"... And it showed, with representatives and senators from both parties issuing definitive statement on the 448-page report's conclusions within just hours of its release," he said.

In response to Amash's remarks about the report, U.S. Rep. Rashida Tlaib (D-Mich.) tweeted: "... come find me in 1628 Longworth. I've got an impeachment investigation resolution you're going to want to cosponsor."

The lengthy, redacted version of the report on Mueller's investigation of the Trump campaign and Russia's reported efforts to interfere in the 2016 election.

The release of Mueller’s report has provoked debate over impeachment because it did not take a stance on whether Trump or his associates obstructed justice, instead laying out instances in which they potentially obstructed justice.

USA Today contributed to this report.