501. Severability If any provision of this Act or amendment made by this Act, or the application of a provision or amendment to any person or circumstance, is held to be unconstitutional, the remainder of this Act and amendments made by this Act, and the application of the provisions and amendment to any person or circumstance, shall not be affected by the holding. 502. Effective date (a) In general Except as may otherwise be provided in this Act and in the amendments made by this Act, this Act and the amendments made by this Act shall apply with respect to elections occurring during 2026 or any succeeding year, without regard to whether or not the Federal Election Commission has promulgated the final regulations necessary to carry out this Act and the amendments made by this Act by the deadline set forth in subsection (b). (b) Deadline for regulations Not later than June 30, 2024, the Federal Election Commission shall promulgate such regulations as may be necessary to carry out this Act and the amendments made by this Act.