Anyone remember Schoolhouse Rock on Saturday mornings when they were a kid? They taught grammar and multiplication but around the bicentennial they introduced 'America Rock' which supposedly taught American history. There was an episode they used to show all the time called Great American Melting Pot http://www.geocities.com/Athens/Academy/7316/Grea.html and it largely dealt with culturally white Eurocentric immigration themes.
When two ethnic groups exist in direct proximity to each other, almost inevitably some cultural practices are adopted from each other. The idea of a 'melting pot' in North America, though, is misleading in many ways because there still exists a largely Eurocentric cultural dominance. Sure, you can go out to eat at a Chinese or Indian restaurant or name your daughter Keisha but typically individuals in society are rewarded to the extent that they conform to the Eurocentric model and are marginalized to the extent that they diverge from those values and practices.