President Donald Trump has turned his fire on one of his own Republican allies after Florida Rep. María Elvira Salazar publicly challenged his administration’s immigration crackdown.

Salazar, a Republican representing a heavily Hispanic Miami-area congressional district, released a campaign advertisement earlier this month directly addressing Trump and warning that his immigration enforcement policies had gone too far.

“Mr. President, some of your immigration enforcement efforts have gone too far,” Salazar said in the ad.

She also delivered a warning about the political consequences of the administration’s approach to immigration, saying Hispanic voters who helped return Trump to the White House in 2024 now “feel betrayed.”

Trump apparently did not appreciate the criticism.

On Saturday night, the president used his Truth Social account to amplify a barrage of posts attacking Salazar. Rather than writing a lengthy response himself, Trump reposted messages from supporters criticizing the Republican congresswoman and, in several cases, calling for her removal from Congress.

One of the posts Trump shared declared that Republicans needed someone new to replace Salazar. Another expressed regret that Salazar’s Republican primary opponent had not been elected.

The attack represents a dramatic change in tone toward a Republican whom Trump previously supported.

Salazar endorsed Trump during the 2024 presidential campaign, and Trump endorsed her reelection bid earlier this year. She has generally supported the president while simultaneously advocating a different approach to immigration.

At the center of the disagreement is Salazar’s argument that immigration enforcement is sweeping up too many people without criminal records.

In her campaign advertisement, Salazar cited data showing that roughly half of the approximately 50,000 immigrants detained in July had no criminal record. She urged Trump to question what his advisers were telling him about immigration enforcement.

Salazar has also championed the Dignity Act, legislation intended to provide legal status for certain undocumented immigrants who meet specific requirements while strengthening border enforcement.

The political stakes are particularly high for Salazar.

Her South Florida district is overwhelmingly Hispanic, and Trump carried it comfortably in the 2024 presidential election. But Salazar now faces Democrat Eliott Rodriguez in a congressional race that has become considerably more competitive.

That makes immigration policy more than an ideological disagreement for the congresswoman. It is an issue affecting a substantial portion of the voters she represents.

Only days before Trump's online attack, Salazar publicly described her relationship with the president in much friendlier terms.

After speaking with Trump following the release of her advertisement, Salazar said the president had been courteous and receptive to her concerns.

The weekend barrage of Truth Social posts painted a very different picture.

The episode highlights an increasingly familiar feature of Trump's relationship with Republican lawmakers: public disagreement can quickly turn a political ally into a target.

Salazar did not leave the Republican Party. She did not endorse a Democrat. She did not abandon conservative immigration enforcement.

She publicly told the president that she believed part of his policy was hurting the people she represents.

Trump responded by amplifying demands that Republicans replace her.