Apparently for some the gray wolf's range in the lower 48 states needs to be dramatically expanded. According to USA Today [2], the Center for Biological Diversity intends to sue the Interior Department [3] for failing to develop a comprehensive wolf recovery plan for the entire lower 48 states as required by the Endangered Species Act.

Leaving no potential habitat unturned the group believes:

A national plan would provide a roadmap for recovering existing wolf populations and returning wolves to some of their historic range around the country; suitable wolf habitat exists in the Pacific Northwest, California, Great Basin, southern Rocky Mountains, Great Plains and New England.