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 crack down on immigration into the country.

The Justice Department filed a lawsuit Wednesday alleging that the state of Texas is discriminating against out-of-state college students by allowing undocumented immigrants residing in Texas access to in-state tuition rates.