Texas constitution
Article 9: counties
Section 11

(c) If such tax is authorized, no political subdivision or municipality within or having the same boundaries as the district may levy a tax for medical or hospital care for needy individuals, nor shall they maintain or erect hospital facilities, but the district shall by resolution assume all such responsibilities and shall assume all of the liabilities and obligations (including bonds and warrants) of such subdivisions or municipalities or both. The maximum tax rate submitted shall be sufficient to discharge obligations, liabilities, and responsibilities, and to maintain and operate the hospital system, and the Legislature may authorize the district to issue tax bonds for the purpose of the purchase, construction, acquisition, repair or renovation of improvements and initially equipping the same, and such bonds shall be payable from said Seventy-five Cent (75ยข) tax. The Legislature shall provide for transfer of title to properties to the district.