A year after Gov. Ron DeSantis of Florida pledged to make his state one of the toughest in the nation on immigration enforcement, he has largely succeeded: More immigration arrests were made in Florida in 2025 than any state but Texas, and there have been few signs of the crackdown easing.

Yet the enforcement machine that the Republican governor hastily built to support the federal crackdown he welcomed is starting to show cracks, weighed down by a crush of detainees crowding some jails and a set of growing concerns, even among some law enforcement officials, about aggressive enforcement tactics in a midterm election year.

At a meeting of the State Immigration Enforcement Council last week, several Republican sheriffs expressed concern about unauthorized immigrants who have not committed any crimes being detained and deported.

“There are those here that are working hard,” said Sheriff Grady Judd of Polk County, the chairman of the new council, which advises the governor and cabinet members on immigration enforcement. “They have kids in college or in school. They’re going to church on Sunday. They’re not violating the law, and they’re living the American dream.”

The comments from the elected sheriffs signaled a shift in tone among a small but influential group of Florida Republicans who have helped carry out President Trump’s and Mr. DeSantis’s immigration policies.

“It’s too wide a net,” Chief Ciro M. Dominguez of the Naples Police Department, another member of the council, said during its quarterly meeting on March 16. “And we’re hurting people who are not the target of this.”