U.S. Rep. Justin Amash (R-MI) holds a Town Hall Meeting on May 28, 2019 in Grand Rapids, Michigan. (Bill Pugliano/Getty Images)
PHOTO: Bill Pugliano/Getty Images
U.S. Rep. Justin Amash (R-MI) holds a Town Hall Meeting on May 28, 2019 in Grand Rapids, Michigan. (Bill Pugliano/Getty Images)
Now playing
01:38
Justin Amash leaves the conservative Freedom Caucus
US President Joe Biden speaks about the 50 million doses of the Covid-19 vaccine shot administered in the US during an event commemorating the milestone in the Eisenhower Executive Office Building in Washington, DC, February 25, 2021. (Photo by SAUL LOEB / AFP) (Photo by SAUL LOEB/AFP via Getty Images)
PHOTO: Saul Loeb/AFP/etty Images
US President Joe Biden speaks about the 50 million doses of the Covid-19 vaccine shot administered in the US during an event commemorating the milestone in the Eisenhower Executive Office Building in Washington, DC, February 25, 2021. (Photo by SAUL LOEB / AFP) (Photo by SAUL LOEB/AFP via Getty Images)
Now playing
02:28
Axelrod explains the message Biden is sending with strike
WASHINGTON, DC - FEBRUARY 13: Senate Minority Leader Mitch McConnell (R-KY) walks from his office to the Senate Chamber for the fifth day of former President Donald Trump
PHOTO: Chip Somodevilla/Getty Images
WASHINGTON, DC - FEBRUARY 13: Senate Minority Leader Mitch McConnell (R-KY) walks from his office to the Senate Chamber for the fifth day of former President Donald Trump's impeachment trial at the U.S. Capitol on February 13, 2021 in Washington, DC. House impeachment managers asked the senate Saturday for the ability to question witnesses as part of the trial. (Photo by Chip Somodevilla/Getty Images)
Now playing
02:07
McConnell says he'd support Trump as GOP nominee
The Pentagon, the headquarters of the US Department of Defense, located in Arlington County, across the Potomac River from Washington, DC is seen from the air January 24, 2017.  / AFP PHOTO / Daniel SLIM        (Photo credit should read DANIEL SLIM/AFP via Getty Images)
PHOTO: Daniel Slim/Getty Images
The Pentagon, the headquarters of the US Department of Defense, located in Arlington County, across the Potomac River from Washington, DC is seen from the air January 24, 2017. / AFP PHOTO / Daniel SLIM (Photo credit should read DANIEL SLIM/AFP via Getty Images)
Now playing
05:24
US carries out airstrikes on Iran-backed militia groups
The exterior of the U.S. Capitol building is seen at sunrise on February 8, 2021 in Washington, DC. The Senate is scheduled to begin the second impeachment trial of former U.S. President Donald J. Trump on February 9.
PHOTO: Sarah Silbiger/Getty Images
The exterior of the U.S. Capitol building is seen at sunrise on February 8, 2021 in Washington, DC. The Senate is scheduled to begin the second impeachment trial of former U.S. President Donald J. Trump on February 9.
Now playing
01:57
Senate parliamentarian rules against minimum wage increase in relief bill
Now playing
03:56
Marjorie Taylor Greene's challenger explains decision to run
PHOTO: CNN
Now playing
03:44
Acting US Capitol Police chief explains 'operational challenges' from January 6 riot
Rep. Marie Newman (D-IL) speaks with CNN
PHOTO: CNN
Rep. Marie Newman (D-IL) speaks with CNN's Alisyn Camerota.
Now playing
07:17
Lawmaker reacts to Rep. Taylor Greene's tweet on her transgender daughter
Connolly
PHOTO: CNN
Connolly
Now playing
03:51
'I will not be lectured' on bipartisanship: Lawmaker fires back at Jim Jordan
US President Donald Trump speaks to the press from the South Lawn of the White House after announcing and initial deal with China in Washington, DC, prior to departing to Lake Charles, Louisiana to hold a campaign rally on October 11, 2019.
PHOTO: NICHOLAS KAMM/AFP/Getty Images
US President Donald Trump speaks to the press from the South Lawn of the White House after announcing and initial deal with China in Washington, DC, prior to departing to Lake Charles, Louisiana to hold a campaign rally on October 11, 2019.
Now playing
02:28
Romney says he's 'pretty sure' Trump will win 2024 nomination if he runs
Now playing
02:04
Senate moderates create obstacle for Biden's nominee
This picture taken 26 December 2011 shows the Pentagon building in Washington, DC.  The Pentagon, which is the headquarters of the United States Department of Defense (DOD), is the world
PHOTO: Staff/AFP/Getty Images
This picture taken 26 December 2011 shows the Pentagon building in Washington, DC. The Pentagon, which is the headquarters of the United States Department of Defense (DOD), is the world's largest office building by floor area, with about 6,500,000 sq ft (600,000 m2), of which 3,700,000 sq ft (340,000 m2) are used as offices. Approximately 23,000 military and civilian employees and about 3,000 non-defense support personnel work in the Pentagon. (Photo credit should read STAFF/AFP via Getty Images)
Now playing
04:30
Pentagon report gives insight on White supremacists in active military
Now playing
03:57
GOP senator continues to push riot conspiracy theory
Now playing
02:08
Cabinet secretary explains why he took on challenging role
Rep. Debra Haaland (D-NM), President Joe Biden
PHOTO: Leigh Vogel/Pool/Getty Images
Rep. Debra Haaland (D-NM), President Joe Biden's nominee for Secretary of the Interior, testifies during her confirmation hearing before the Senate Committee on Energy and Natural Resource, at the U.S. Capitol on February 24, 2021 in Washington, DC.
Now playing
00:59
'We need to work together': Haaland responds to question on blind loyalty
Now playing
01:35
Laughter follows awkward moment between GOP leaders
(CNN) —  

Rep. Justin Amash on Monday stepped down from the conservative House Freedom Caucus less than a month after becoming the first Republican member of Congress to say President Donald Trump has committed impeachable offenses.

“I have the highest regard for them and they’re my close friends,” he told CNN. “I didn’t want to be a further distraction for the group.”

Amash’s series of tweets in mid-May shook Capitol Hill, as the conservative Michigan lawmaker said special counsel Robert Mueller’s report established “multiple examples” of Trump committing obstruction of justice. Amash was later insulted by Trump for his opinions – the President said he’s “been a loser for a long time” – and faced blowback from top Republican officials. He’s also now facing a primary challenger who is touting his support of Trump.

The House Freedom Caucus is a group of about three dozen hardline conservatives created in 2015. Its members played a key role in ousting then-House Speaker John Boehner that year, and they had a hand in crafting the GOP’s ultimately failed American Health Care Act in 2017.

Today, the group is home to some of the President’s most ardent defenders, such as Ohio Rep. Jim Jordan and current Chairman Mark Meadows of North Carolina.

Amash, who was a founding member of the group, told CNN in March that he had stopped going to Freedom Caucus meetings after clashing for months with members over the group’s direction under Trump.

He told CNN he had attended a House Freedom Caucus board meeting before House votes on Monday night to announce he would step aside from both the board and the group as a whole. The other members didn’t know he would be going to the meeting.

“It was a positive meeting. It wasn’t negative,” Amash said.

He emphasized his decision was voluntary and that he remains on good terms with his colleagues.

Amash remains the only sitting Republican to publicly say Trump committed impeachable offenses based on his reading of Mueller’s report. He has said it would be appropriate for House Speaker Nancy Pelosi to move ahead with an impeachment inquiry.

He has not signed on to any existing impeachment resolutions.

At his first town hall since publicly stating Trump has engaged in impeachable conduct on May 29, Amash was greeted in Michigan with a standing ovation.

Amash argued Attorney General William Barr misrepresented Mueller’s findings, including in Barr’s testimony before Congress.

The Michigan congressman is known for his independent streak and has a history of splitting with conventional GOP positions on controversial topics.

In recent months, Amash has repeatedly declined to rule out a third-party run for president in 2020.

“In life, if you’re fighting to defend the Constitution and you find a way to do it that’s different and more effective, then you have to think about that,” he told the crowd of a potential presidential bid at his Grand Rapids town hall last month.

He was the first Republican to express support for an independent investigation into Russian interference in the 2016 election and to say in 2017 that it could be an impeachable offense if Trump obstructed justice in firing then-FBI Director James Comey.

He drew attention earlier this year when he was the only Republican to ask serious questions designed to uncover potential wrongdoing by the President during an oversight hearing with Trump’s former personal attorney Michael Cohen.

This story has been updated.