Far-right political activist Laura Loomer has accused former GOP Representative Marjorie Taylor Greene of betraying President Donald Trump after Greene suggested on social media that a new political movement was taking shape around an "America First" message.

Greene, who resigned from Congress earlier this year, shared a photograph featuring herself, her husband Brian Glenn, conservative commentator Tucker Carlson, GOP Kentucky Representative Thomas Massie, former director of the National Counterterrorism Center Joe Kent, and other figures associated with the anti-interventionist wing of the conservative movement.

"We said no more foreign wars and we meant it and supported Donald Trump because he made that promise," Greene wrote in the X post on Saturday. "But he's betrayed us all. Our commitment is America First for all Americans, right, left, and center. The movement has begun."

While Greene did not explicitly identify the group as a formal political organization, the post followed recent speculation regarding a potential third-party vehicle involving Carlson. The former Fox News host has previously floated the concept of establishing a new political movement for voters disillusioned with both major parties.

Greene’s break with Trump marked a sharp reversal from her years as one of his most vocal allies, as she publicly accused him of abandoning the “America First” agenda and escalating foreign conflicts she said betrayed core MAGA principles. The split escalated after disputes over U.S. military actions and the administration’s refusal to release additional Jeffrey Epstein-related documents, prompting Trump to revoke his endorsement and denounce Greene in public statements.

Greene described Trump’s leadership as destabilizing and warned continued loyalty to him would cost Republicans future elections. She went further by calling for the GOP to be “burned to the ground,” arguing it had become captive to leadership and donors rather than voters, and distancing herself from what she described as a cult-like version of MAGA centered on Trump personally.

The former congresswoman's X post drew an immediate rebuke from Loomer, a prominent Trump loyalist, who characterized the figures in the photograph as adversaries of the president.

"Marjorie Traitor Greene announces a new movement has begun with her, her husband Brian Glenn, Tucker Qatarlson, Thomas Massie…" Loomer wrote on X, using a moniker for Carlson. Loomer further alleged that those pictured belonged "on a government watch list" and were "amplified by foreign adversaries," though she offered no supporting evidence.

The targets of Loomer's statements have not yet issued public responses. Conversely, other conservative commentators welcomed Greene's remarks. Owen Shroyer praised the group, posting on X that it represented "the future leadership our country needs and American Patriots want."

Newsweek has reached out to Greene, Massie and Carlson for comment.

A New Divide in Trump's Coalition?

The clash highlights tensions within Trump's political coalition over the future of the "America First" agenda, particularly on foreign policy.

Trump built much of his political identity around promises to challenge Washington's foreign policy establishment and reduce U.S. involvement in overseas conflicts. However, his decisions as president, including going to war with Iran, have at times created disagreements among supporters who favor a more strictly non-interventionist approach.

Massie, who lost to a Trump-backed challenger in this year's primary, is one of the most conservative members of Congress but has been at odds with the president over foreign policy and the Department of Justice’s handling of the Epstein files.

Meanwhile, Kent announced his resignation in March, citing his concerns about the justification for military strikes in Iran, saying that he couldn't "in good conscience” back the Trump administration’s war.

In response, Trump said, in part, to a question about Kent's resignation at the White House, "I always thought he was weak on security. Very weak on security. It's a good thing that he's out."

Greene's X post appeared to emphasize a broader version of "America First," saying the movement should include Americans "right, left, and center."

Trump has not yet publicly responded to Greene's remarks or Loomer's criticism.

What Did Tucker Carlson Say About Starting a New Party?

Greene's post comes weeks after Carlson said he wanted to help create a new political party, arguing that Republicans and Democrats had become indistinguishable on issues including war and finance.

"I'm going to help build a third party," Carlson told the Columbia Journalism Review, adding that "there should be a good-faith effort to figure out what benefits the country."

He argued that the U.S. had become "a one-party state posing as a democracy" because the two major parties were "in lockstep solidarity" on the issues he considered most important. Carlson also stressed that he did not intend to run for office himself, saying: "I don't want to be a candidate."

Carlson has long opposed American military involvement in the Middle East and said in a statement to ABC News earlier this year that the decision to attack Iran was "absolutely disgusting and evil."

"Tucker has lost his way," Trump told ABC News at the time. "He's not MAGA. MAGA is saving our country. MAGA is making our country great again. MAGA is America First, and Tucker is none of those things. And Tucker is really not smart enough to understand that."

Is This a Challenge to Trump?

If Greene's "movement" were to evolve into a formal third party, it could create challenges for Trump by splintering part of the "America First" coalition that has underpinned his political success. However, Greene did not explicitly link her post to Carlson's proposal for a third party, and there is no indication that a new party has been formally launched. Any impact on Trump's political standing would likely depend on whether such an effort attracted meaningful support beyond a vocal segment of his base.

While third parties have historically struggled to gain traction in U.S. politics, facing steep structural barriers such as ballot access laws and the winner-take-all electoral systems, they can siphon votes from one of the two major parties, particularly in closely contested races.

Contact Newsweek editors for this story: Steve Mollman and Anthony Murray.