Ala. Const. art. XI, § 215.04

The legislature may authorize the use of any portion of the proceeds of any special county tax levied for the purpose of acquiring, constructing, equipping, operating, and maintaining public hospitals, public clinics, public health centers, and related public health facilities of any kind, or for any one or more of the purposes included within the meaning of the term “public hospital purposes,” for the purpose of providing hospital care and treatment for indigent residents of the county, or for the purpose of matching any state or federal funds made available for use in providing hospital care and treatment for indigent residents of the county, any provision of the Constitution to the contrary notwithstanding. Provided, however, that if any portion of the proceeds of such tax shall have been pledged to the payment of any bonds, warrants, notes, or other obligations or evidences of indebtedness, such portion of the proceeds of the tax as shall have been so pledged shall not be used for any purpose except in payment of such bonds, warrants, notes, or other obligations or evidences of indebtedness.