I've been thinking about the animal part, so i checked a North American wildlife guide out of the library. Here's a few ideas.
Caribou are exactly the same as reindeer.
Muskoxen look like a good choice. I don't know if bighorn sheep have any domestication potential. Unfortunately, these are all cold weather species.
I wish i could suggest javelina, but i hear they have
nasty tempers. Still, domestic pigs have nasty tempers, and who knows what could be done in a century or two of captive breeding.
Poultry would be the best choice. Turkeys are from North America, and there are goose species that could be domesticated. I've read several places that almost all domestic duck species are bred from mallards (American and European species are extant). The only exception i am aware of is Muscovies (South American). Wood ducks, pigeons, bob-whites, and quail all can be and are raised and bred in captivity.
A couple of spare thoughts on the subject, cotton-tail rabbits can be successfully kept in captivity and if poultry were to kept, some bright person would domesticate the Carolina Parakeet.