Super Mario Bros. 2 for the NES was called "Super Mario USA" in Japan, but was most definitely made out of the game Doki Doki Panic, which was made in Japan. So that little "USA" tag doesn't necessarily imply that it was made entirely in the USA.

Either way, I loved FFMQ. It was/is a fantastic game. I really enjoyed it and I'm sure that I'll play it again some time. There's not much challenge to it, but it is still fun.