It seems like you dont need to move to US as you are already preoccupied with the idea of racisism. I live in a small city in midwest and actually never felt anything. I have few friends in London and they say they have problems some time. Racism exists everywhere.In fact you have more racism in Nepal then anywhere else. If US is your 2nd choice and you are happy Whereever you live why to move?????????? You got greencard it doesnt mean USCIS is begging you to come here. Thanks