Tex. Education Code § 55.174

(a) In addition to other authority granted by this subchapter, the board of regents of Texas Southern University may acquire, purchase, construct, improve, renovate, enlarge, or equip property, buildings, structures, facilities, roads, or related infrastructure for Texas Southern University to be financed by the issuance of bonds in accordance with this subchapter and in accordance with a revenue financing program adopted by the board in an aggregate principal amount not to exceed $18 million.

(b) The board may pledge irrevocably to the payment of those bonds all or any part of the revenue funds of Texas Southern University, including student tuition charges required or authorized by law to be imposed on students enrolled at the university. The amount of a pledge made under this subsection may not be reduced or abrogated while the bonds for which the pledge is made, or bonds issued to refund those bonds, are outstanding.