As part of the ancestry of that Swedish immigration wave to the Midwest, all I know of is lutefisk, which is by no means sushi. It's about the most vile thing you can imagine - dried cod turned to fish jello in lye. You can smell it from miles away when it's being cooked, and... well, the smell is worse than the taste, but to think of equating that with sushi...

I don't think you can even call it seafood.