Tex. Local Government Code § 334.0082

(a) This section applies only to a municipality that:

(1) has a population of at least 250,000 that borders the Rio Grande, and that approved a sports and community venue project before January 1, 2009; or

(2) is located in a county adjacent to the Texas-Mexico border if:

(A) the county has a population of at least 500,000;

(B) the county does not have a city located within it that has a population of at least 500,000; and

(C) the municipality is the largest municipality in the county described by this subdivision.

(b) Notwithstanding any other law, including Section 334.089, after complying with Section 334.022, a municipality to which this section applies may hold an election under Section 334.024 on the question of approving and implementing a resolution to:

(1) authorize the municipality to plan, acquire, establish, develop, construct, or renovate a convention center and related infrastructure in the city limits of the municipality as part of an existing or previously approved sports and community venue project, regardless of whether the convention center is located on the premises of the existing or previously approved venue project;

(2) impose a tax under Subchapter H at a rate not to exceed two percent of the cost of a room; and

(3) authorize the municipality to finance, operate, and maintain the venue project described by Subdivision (1), including the convention center, using the revenue from any taxes imposed by the municipality under this chapter, including taxes previously approved in relation to the existing or previously approved venue project.

(c) If the resolution is approved by a majority of the votes cast in the election, the municipality may implement the resolution.