A federal judge has blocked a Texas law that has for decades given college students without legal residency in the U.S. access to reduced in-state tuition, swiftly ruling in favor of the latest effort by the Trump administration to to crack down on immigration into the country.

The Justice Department Wednesday sued Texas for allowing young adult migrants, commonly referred to as “Dreamers,” to access in-state tuition at public colleges and universities

Within hours of a federal lawsuit targeting Texas’ policy of letting its nearly 20,000 undocumented students qualify for lower public tuition rates, the 24-year-old law was no more.