Federal immigration officials, citing Mexico’s help and new Trump administration initiatives, are seeing far fewer illegal immigrants at the southern border than expected and now believe that those seized this month will be 25% fewer than in June, far more than the historic average drop.

What’s more, said Ken Cuccinelli, acting director of the Citizenship and Immigration Services, the number of migrants encountered at the border should continue to plummet as Mexico stretches its cooperation with the U.S. further across the southern border and changes to the asylum process kick in.