The restrictions, including one that would provide the bear no more protection from oil drilling in Arctic waters than it now has under another federal law, the Marine Mammal Protection Act, prompted environmentalists and some members of Congress to question whether the bear will get any more protection at all.
''They're trying to make this a threatened listing in name only with no change in today's impacts and that's not going to fly,'' said Jamie Rappaport Clark of Defenders of Wildlife and a former director of the U.S. Fish and Wildlife Service in the Clinton administration.
Three environmental groups, whose lawsuit forced the Interior Department to make a decision on the bear's status, indicated they are preparing to go to court again to challenge some of the provisions Kempthorne outlined.
These measures amount to the bear not getting all the protections it in entitled to under the Endangered Species Act and won't hold up in court, said Kassie Siegel of the Center for Biological Diversity.
Andrew Wetzler of the Natural Resources Defense Council said the Interior Department's decision allows loopholes in the law ''to allow the greatest threat to the polar bear—global warming pollution—to continue unabated.''
Kempthorne acknowledged that the polar bear—25,000 of them that roam the Arctic region from Russia and Alaska to Greenland—''poses a unique conservation challenge.'' It is the first time in the history of the Endangered Species Act that the law has been used to protect an animal whose nemesis is global warming.
''I want to make clear that this listing will not stop global climate change or prevent any sea ice from melting,'' said Kempthorne. ''...The ESA is not the right tool to set U.S. climate policy.''
Kempthorne sought to assure the business community that the bear's protection would not keep someone from building a coal-burning power plant or drill for oil in Arctic waters.
The U.S. Chamber of Commerce applauded the decision. ''It will protect polar bears while also protecting American jobs and businesses,'' said Bill Kovacs, the Chamber's vice president for environmental affairs.
But some business groups weren't as impressed.
The ruling ''will unleash a torrent of lawsuits'' by environmentalists and ''give them a powerful new legal sledgehammer'' against businesses and agricultural operations especially in the West, warned Jim Sims, president of the Western Business Roundtable.
Reed Hopper, an attorney for the Pacific Legal Foundation, which frequently has challenged the Endangered Species Act in property rights disputes, said he plans to challenge the bear listing as well in court.
The polar bear ''already is the most protected (animal) in the world and needs no additional protection,'' maintained Hopper. He noted the number of polar bears have more than doubled since the late 1960s from 12,000 to about 25,000 across the Arctic region from Alaska to Greenland.
Interior Department scientists in a series of reports last September that were heavily relied on by Kempthorne in his listing decision, concludes that continuing melting of sea ice will lead to a two-thirds decline in polar bears by mid-century, meaning the disappearance of at least 15,000 bears.