The vehicle line is designed and developed in Michigan (along with several other remote testing locations, most of which are in our good old USA). Perhaps by some of your neighbors. A good portion of the subsystem and component content is designed and developed in Michigan and elsewhere in the US. Some by your neighbors.
Corporate revenues go somewhere. Michigan sounds better than somewhere else. Then, some of your neighbors will get wages and salaries and benefits. Future programs get funded. People get hired. Taxes get paid. Sure, you could advocate for the Illinois built Taurus, or Michigan built Mustang (my favorite, hence the user name) & Focus as alternatives. But, if a family wants a mid-size sedan, they can't go wrong with the Fusion/Milan/MKX. Even if it is assembled in Mexico, the pesos come back to Michigan. And, they are darn fine cars to boot.