William R. Lowry, Repairing Paradise: The Restoration of Nature in America's National Parks

"The wolf reintroduction has gone so well that, somewhat ironically, the wolves are now threatened by their own success. Indeed, virtually all the conditions for strong public support that were evident in the early years of the program remain intact. The scientific and economic studies cited above support the original predictions of benefits, and agency officials remain committed to the policy. Yet some political actors remain hostile to the program. As NPS management assistant Sacklin said, "No amount of good science will stop a politician."