Listing the polar bear as a threatened species would have significant public policy consequences. It would set a new precedent, representing the first linkage of species endangerment with global warming. Such a listing would basically wall off the entire Arctic region to exploration, resource extraction, and development--at least by U.S. companies--and a threatened species listing would give environmental groups the ability to sue future U.S. governments to force them to reverse climate change by whatever means necessary.

There is little doubt that such lawsuits would be filed quickly. According to the NRDC:

Listing the polar bear guarantees federal agencies will be obligated to ensure that any action they authorize, fund, or carry out will not jeopardize the polar bears' continued existence or adversely modify their critical habitat, and the U.S. Fish and Wildlife Service will be required to prepare a recovery plan for the polar bear, specifying measures necessary for its protection.