Section 158.7 - Exclusivity of authority(a) A State, political subdivision of a State, or authority of a State or political subdivision that is not the eligible public agency may not tax, regulate, prohibit, or otherwise attempt to control in any manner the imposition or collection of a PFC or the use of PFC revenue.(b) No contract or agreement between an air carrier or foreign air carrier and a public agency may impair the authority of such public agency to impose a PFC or use the PFC revenue in accordance with this part.Doc. No. 26385, 56 FR 24278, May 29, 1991, as amended by Amdt. 158-2, 65 FR 34541 , May 30, 2000