I'm going to have to disagree with you on that. You can definitely get authentic Asian food in America, you just have to go to the right places or eat home cooked meals. There's people who are Asian, from whatever country, and have places that they go to that serve authentic meals.
Even then it is still hard because you are having to import certain ingredients and often times there will be a slight change in recipes to keep from having to do that. Eventually over the course of several iterations you get an americanized version of the food. It's just what is available locally.
I'm going to have to disagree with you on that. You can definitely get authentic Asian food in America, you just have to go to the right places or eat home cooked meals. There's people who are Asian, from whatever country, and have places that they go to that serve authentic meals.
Even then it is still hard because you are having to import certain ingredients and often times there will be a slight change in recipes to keep from having to do that. Eventually over the course of several iterations you get an americanized version of the food. It's just what is available locally.