The plunge comes after Trump effectively shut off crossings at official ports of entry for migrants seeking asylum or other forms of entry via the Biden-era CBP One app. Mexico has also been playing a greater role in keeping immigrants passing through the country from reaching the U.S. border.

Border Patrol agents made just over 6,000 arrests in June, according to government figures, a sign that President Trump’s hard-line immigration policies are working to keep people out.

A federal judge on Wednesday ordered the Trump administration to halt implementation of a presidential proclamation that cracked down on border crossings and asylum claims, finding that the policies violate federal law.