(a) A joint board may apply for and accept a permit, license, or other grant of authority to establish, operate, and maintain:
(1) one or more foreign trade zones, as Texas ports of entry under federal law, in any county in which the board's airport is located; and
(2) other subzones or other additions to an existing zone inside or outside that county.
(b) In operating and maintaining a foreign trade zone or subzone under this subchapter, a joint board may exercise any power or authority necessary to establish, operate, and maintain the foreign trade zone or subzone in accordance with federal law, rules, and regulations.