The board voted to cover tuition free of charge for undergraduate students whose families "have an adjusted gross income (AGI) of $100,000 or less," UT officials said in a Friday news release.

Texas A&M System officials pointed to their own free-tuition programs across schools. Each university has its own income requirements. Texas A&M-Corpus Christi, for example, provides such aid to students whose families make less than $125,000 a year. At Prairie View A&M, the threshold is $30,000 for tuition help.

A group of Republican lawmakers are questioning if funding for the University of Texas System should be cut after approving the expansion of a program to cover tuition and fees for qualifying students.