Enforcement Authority "Texas Code"
Refusing or Failing to Leave Building Closed to Public-Section 51.242, Texas Education Code: “No person may refuse or fail to leave a building under the control and management of a public agency, including a state-supported institution of higher education, during those hours of the day or night when the building is regularly closed to the public. Upon being requested to do so by a guard, watchman, or other employee of a public agency, including a state-supported institution of higher education, controlling and managing the building or property, if the surrounding circumstances are such as to indicate to a reasonable person that the individual or individuals have no apparent lawful business to pursue.”
Unauthorized Person Refusal of Entry, Ejection, Identification-Section 51.209, Texas Education Code: “The governing board of a state institution of higher education or its authorized representatives may refuse to allow persons having no legitimate business to enter on property under the board's control, and may eject any undesirable person from the property on his refusal to leave peaceably on request. Identification may be required of any person on the property.”
Trespass, Damage, Etc. - Section 51.204, Texas Education Code: “It is unlawful for any person to trespass on the grounds of any state institution of higher education of this state or to damage or deface any of the buildings, statues, monuments, memorials, trees, shrubs, grasses, or flowers on the grounds of any state institution of higher education.”