I would argue that the US is way more nationalistic than Europe, we here have been able to cooperate and share a part of our national sovereignties with other countries. Also, the results of nationalism are much more present in the latent culture here, considering how great the 20th century was.
Finally, in the US you still hear people speaking total nonsense like "we are the land of the good and prosperity and peace and truth etc. we must spread democracy and kill the bad guys", and these people seem to still be listened to. What the fuck. What happened to putting oneself in perspective ?
For now on, this shall be a EU vs NA thread