They've been protected in several states for a while so their numbers are coming back and their range is increasing. Much like coyotes that didn't previously range down into the southeast, wolves are very adaptable and will force out and eliminate lesser predators as they expand their territory and become a nuisance.
Coyotes displaced a lot of the fix and bobcat population in their expanded territory. Wolves may displace coyotes.
The problem is that wolves will take down larger game, livestock, pets and even attack humans once their numbers are high.
So once their numbers get good enough to call them threatened, they can start to think about managing their population through limited hunting or trapping, and relocation. Once they are no longer threatenedthey can open hunting.