Nothing, unless you want to alienate your base and lose elections.
Our Canadian Trash governor can do just about anything she wants and get re-elected. Why? She panders to Detroit and the unions, who are still powerhouses here. Teachers are the only workers who haven't seen their health care benefits and prescription co-pays go up exponentially. They won't dare strike during the next election because they're the only ones who aren't financially hurting. Their "for the children!" screeches won't earn them a bit of sympathy from laid-off auto workers and retirees who are getting clobbered in the pocketbooks.
When Oakland County sneezes, the rest of the state catches a cold. In this case we've got pneumonia.
On a bright note, Oakland County exec L. Brooks Patterson is looking at a petition drive to finally end the SBT, which taxes all businesses on their profits AND payroll. It automatically puts the state at a disadvantage when it comes to luring business here, and existing companies are leaving because of it. Granholm is, of course, against it, but she's fiddling while the state burns.