When Berenice, a senior at the University of Texas at Austin, first learned about a state law that offered undocumented students in-state tuition, she realized that she could afford to go to college.

“Without it, it wouldn’t have been a possibility for me,” said Berenice, who is undocumented and agreed to be interviewed on the condition that only her first name be used.

But Berenice, whose family brought her to Texas from Mexico when she was 9 years old, is one of thousands of students now facing higher tuition bills as the in-state benefit has come to an end. Texas officials moved to end the law shortly after the Trump administration challenged the policy in June, arguing that it was illegal for Texas to offer unauthorized immigrants the same discounted tuition as other state residents.

Although her tuition previously cost about $5,000 a semester and was covered entirely by state financial aid, Berenice said her tuition costs jumped to $21,000 this semester.

The challenge against Texas was one of several efforts by the Trump administration to clamp down on programs that provide financial relief for undocumented students. After the Justice Department filed a complaint against Texas, it challenged similar policies in Kentucky, Minnesota and Oklahoma. On Tuesday, the department also filed a complaint against Illinois for offering in-state tuition and scholarships to unauthorized immigrants.

Twenty-two states and the District of Columbia offer in-state tuition to their undocumented students, according to the Presidents’ Alliance on Higher Education and Immigration, a nonpartisan group of American college and university leaders. There are roughly 510,000 undocumented students enrolled in U.S. colleges and universities, representing about 2.4 percent of all students at higher education institutions, according to the alliance’s estimates.