To amend the Marine Mammal Protection Act of 1972 to allow importation of polar bear trophies taken in sport hunts in Canada before the date the polar bear was determined to be a threatened species under the Endangered Species Act of 1973.

HR 6251 would amend the Marine Mammal Protection Act to allow U.S. importation of polar bear trophies (excluding internal organs) from sport hunts in Canada that occurred before specific dates: February 18, 1997, or May 15, 2008. The bill requires hunters to provide proof of legal harvest before those dates and directs the Secretary of the Interior to issue permits without considering current population status or other restrictions under the Act. It directly affects hunters who took polar bears in Canada before these dates and wish to import trophies, bypassing standard MMPA import limitations. The policy change only applies to trophies from past hunts, not future hunting activities.