The gift isn't coming from a foreign state. It's coming from the Nobel Peace Prize committee, which is not a foreign state nor a representative of a foreign state. It's members are picked by the Norwegian Parliament, yes, but active parliamentarians cannot sit on the committee, unless they have explicitly stated their intent to step down shortly.
Like others said... there's plenty of other Obama bashing threads this can be taken too without mucking up a good Foglesong bashing thread.