New U.S. House districts that could help Republicans win several additional seats in Florida got their first test in court Friday against assertions that they violate a state constitutional ban on partisan gerrymandering.

Attorneys representing voters asked a state judge to block the new districts from being used in the midterm elections and instead reinstate districts used for previous elections. Such a move would create a significant wrinkle in President Donald Trump’s attempt to hold on to a narrow House majority by redrawing voting districts to the GOP’s advantage. The judge gave no timetable for when he will rule.

Florida’s new House map is part of a national redistricting battle that gained steam last year when Trump urged Texas Republicans to redraw the state’s congressional districts. On Friday, the Texas Supreme Courtrefused to declare that Democratic lawmakers had vacated their offices when they briefly fled the state to block a redistricting vote.

The Florida Legislature approved a new House map on April 29 — the same day the U.S. Supreme Court weakened federal Voting Rights Actprotections for minorities while striking down a majority-Black congressional district in Louisiana. Since then, several Southern stateshave taken steps to try to eliminate minority districts that have elected Democrats.

Florida intends to shut down a high-profile immigration detention center that it opened last summer in the Everglades, according to a federal official and three people familiar with the facility’s operations.

Officials at the center, known as Alligator Alcatraz, told vendors there on Tuesday afternoon that it was closing, the people familiar with the facility’s operations said.

Vendors were told that detainees would be moved from the facility by the start of June and that the center would be broken down over the following weeks, the three people said. The three people and the federal official all requested anonymity to discuss the closure, which has not yet been made public.

It is unclear where the detainees would go; the federal government runs many other detention centers, including in Florida. The Everglades center, which is run by the state, held about 1,400 detainees as of last month, according to ICE data.

The announcement came days after The New York Times reportedthat Florida was in talks with the Trump administration to shut down the center, which has cost the state hundreds of millions of dollars to operate since it opened last July. Gov. Ron DeSantis, a Republican, confirmed after the article’s publication that federal and state officials had discussed closing the center.