For more than 20 years, students in Texas could qualify for lower, in-state tuition at public colleges regardless of immigration status if they lived in the state for at least three years and graduated from a Texas high school or earned a GED.

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.

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.