; (2) used for noncommercial subsistence purposes in accordance with State or territorial law; or (3) used solely for display or research purposes by a museum, college, or university, or other person under a State or Federal permit to conduct noncommercial scientific research. 5. Definition of shark fin In this Act, the term shark fin means— (1) the raw or dried or otherwise processed detached fin of a shark; or (2) the raw or dried or otherwise processed detached tail of a shark. 6. State authority Nothing in this Act may be construed to preclude, deny, or limit any right of a State or territory to adopt or enforce any regulation or standard that is more stringent than a regulation or standard in effect under this Act. 7. Severability If any provision of this Act or its application to any person or circumstance is held invalid, the invalidity does not affect other provisions or applications of this Act which can be given effect without the invalid provision or application, and to this end the provisions of this Act are severable.