Generally, the native-born Americans try to socialize with other native-born people, which leaves the immigrant groups creating social networks within their own groups. Ha, this is utter poppy cock, what happens is they create a tiny minature of their native country, I'm sure it's instinctive. Native born Americans are far more use to socializing with other races than any other people on the face of the earth. The native born Americans of all colors have fed more people than any other nation on earth, educated more people than any other nation on earth, accepted more immigrants than any other people on earth, and benefited the individual more than any other people on earth, and immigrants have the utter gall to call us racists if we even think about protecting ourselves from illegal immigration, Balkanization, civil war, economic collapse, or loss of the Constitution.
Sure the immigrant is free to call us racists, this is America after all, but if said within my ear shot I'll exercise my freedom of speech to tell them what worthless, unappreciative, pieces of trash they are.
I personally never said anybody was racist though even if they are it is their business. As far as native Americans being "more social" than anybody else such a statement is debatable. Have you been everywhere else? How many other people and places have you seen to make such a sweeping statement? I'll stand by my original that you quoted because that is what I have seen in this country for the past 30 years. Go to any college or anywhere else and you'll see what I stated is true in front of your eyes. As far as the "America has helped everybody" logic you have some of it is certainly true but it is also true that America has "been helped" by immigrants who come from outside (obviously these immigrants are going to "help themselves" in this process). See the previous post.