I switched the region back to "US State: Pennsylvania" and got a draft class with nothing but Pennsylvanians.
I'm not sure what happened, but I'll take the result. Good thing I was planning on quickly establishing a history for my league before I began my dynasty story, because I rolled through about a decade trying to figure this out.
Thank you to those of you who offered assistance. Once again, you confirm my belief that this is a great group of people.