I don't think the problem is so much the ethnicity of legal immigrants as it is their lack of assimilation. It used to be that when immigrants came to this country they cast their lot with other Americans. They wanted to be Americans and for the most part it was true. I just read something recently where a woman said her (Italian-American) father and his four brothers all fought against Italy in WWII. With today's immigrants I'm not so sure that would happen. Some immigrants (and native born Americans too) put greater emphasis on their tribal loyalties than they do on being an American. What we have to tell these people is "We're glad to have you. Now you will have great opportunities and the same rights as everyone else. But in turn you must embrace your fellow Americans with at least as much fervor as you embrace other members of your religion or tribe."