User blog comment:Mmpratt99 deviantart/I Need a Good Original Name For An Alternate United States/@comment-26326346-20150530193656

I like commonwealth, but both commonwealth and enclave remind me of Fallout.

I recommend going with Conglomerate: "a number of different things or parts that are put or grouped together to form a whole but remain distinct entities." Maybe go with the name "North American Conglomerate"?