any action under this section, the court shall award costs of litigation, as well as reasonable attorney’s fees, to any prevailing plaintiff. A plaintiff shall not be liable to a defendant for costs or attorney’s fees in any nonfrivolous action under this section. (e) Jurisdiction The district courts of the United States shall have jurisdiction over proceedings under this Act and shall exercise the same without regard to whether the party aggrieved shall have exhausted any administrative or other remedies that may be provided for by law. (f) Abrogation of State immunity Neither a State that enforces or maintains, nor a government official (including an individual described in section 6(c)) who is permitted to implement or enforce any limitation or requirement that violates section 4 shall be immune under the Tenth Amendment to the Constitution of the United States, the Eleventh Amendment to the Constitution of the United States, or any other source of law, from an action in a Federal or State court of competent jurisdiction challenging that limitation or requirement. 8. Severability If any provision of this Act, or the application of such provision to any individual, entity, government, or circumstance, is held to be unconstitutional, the remainder of this Act, or the application of such provision to all other individuals, entities, governments, or circumstances, shall not be affected thereby.