Which nationality in the United States has the most immigrants?

If you mean foreign immigrants in the United States, Mexicans accounted for 23.7% of all immigrants in 20 10, followed by China (4.7%), the Philippines, India, Viet Nam, Cuba, El Salvador, Dominica, Canada and South Korea.

You may be referring to the results of the ancestor census of immigrants to the United States in the history of 2000 (it seems that the results of the 20 10 census have not yet come out)

Then 42.8% of Americans are of German descent, followed by Ireland, Africa, England (only 8.7%), the United States (the nationality of any ancestors outside the United States was not given in the census), Mexico, Italy, Poland, France, Native Americans, Scotland, the Netherlands and Norway. Because intermarriage is very common here, most Americans will report several lineages.