Wildfile advocates are suing Obama administration to prevent the killing of protected grizzly bears that come into conflict with sportsmen over elk they kill or wound during annual hunts in northwest Wyoming.The Sierra Club and Western Watersheds Project accuses the U.S. Fish and Wildlife Service of violating the Endangered Species Acct with a permit allowing four grizzlies to be killed over seven years during elk hunts in Grand Teton National Park,south of Yellowstone National Park.