I don’t know which states will qualify to apply but I’m sure the listing will say. If this is true, you should be able to find it (the listing) on Microsoft’s job openings page. I’ve been applying for customer service positions for a week now so I’ll check this out.
To be honest, I hate that so many of the tech companies are hiring remote workers for customer support. While I’m sure some of them train the employees, I often find that I know more than the tech does when I call for assistance.