are there any soccer games in the US? Is it true that you can play Winning Eleven online in japan? If so, is it possible for me to connect and play if i live in the US?

No, unfortunately, their is no online soccer games in the USA, not YET anyways. Perhaps, since EA Sports is making most of their games online compatible, they will make FIFA that way soon. That would be cool. I am not 100% sure about Winning11 JAP, but I don't think it is online compatible, and even if it was, you wouldn't be able to play it online in the USA. (I.e. Auto Modellista JAP won't play online in USA-it is looking for a server that isn't located here once it connects.)