Prohibited acts

(a) In general Except as provided in subsection (b), it shall be unlawful for any person to— (1) import into, or export from, the United States bear viscera or any bear viscera product; or (2) sell or barter, offer to sell or barter, purchase, possess, transport, deliver, or receive, in interstate or foreign commerce, bear viscera or any bear viscera product. (b) Exception for wildlife law enforcement purposes A person described in section 4(5)(B) may carry out an activity prohibited under subsection (a) if such activity is— (1) solely for the purpose of enforcing a law relating to the protection of wildlife; and (2) authorized by a valid permit issued under appendix I or II of CITES, in any case in which such a permit is required under CITES.