About a decade or so ago, wolves were reintroduced to the upper peninsula of Michigan, a sparsely populated area where wolves once thrived. Wolves, however, are a migratory species, following prey wherever they can find it. Apparently, they followed deer across the frozen straights of Mackinac and have now established a presence in the northern lower peninsula...
The NLP isn't exactly sparsely populated, at least not in comparison to the UP. Wolves, and people, don't mix well. The DNR knows this, and, with a now well established wolf population on both sides of the bridge, are petitioning to begin (lethal) wolfpack management.
http://www.michigan.gov/dnr
Personally, I think reintroducing the wolves was a bad idea in the first place. They kill for fun. They are extremely dangerous and especially so if they get even slightly used to humans (unlike most bears, they will hunt you as food). The whole thing to me seems like a black eye for the DNR and smacks of misguided "conservation" efforts run by bleeding heart bureaucrats whose closest encounter with a wolf was on PBS.