They had enough of us knuckle heads in their own backyard...no need to travel abroad.
Thats a terrible attitude to have and that is what annoys me about US jam bands. America is not the only country in the world and there are other people all over the place who appreciate the music but never get a chance to see them play live because the bands think they have enough fans at home to bother touring.
Cream didn't fuck around and went to US, so did Pink Floyd and Beatles, many times. Grateful Dead on the other hand managed to make it to Europe...what was it....twice? What about Phish? Widespread Panic? Gov't Mule? You can count US jam bands' escapees with one hand.
You should start exporting all the great bands you have over to us and stop sending all the garbage like 50 Cent and Pussycat Dolls, you can keep them.