Fifteen-year-old Cesar Espinosa watched his sister testify for a bill to grant in-state tuition to people who live in Texas but lack legal immigration status, though he didn't truly understand the Texas Dream Act until he graduated from high school.

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.