After three generations, however, most southern/eastern European Americans have become indistinguishable culturally from their Anglo and Irish counterparts, many having intermarried. While it is true that in the northeast, ethnicity still matters (more as a recreational thing than anything else), much of the country is composed of what I like to call "new America" ie recently settled communities in the southeast and west where most white Americans moved from somewhere else, and everyone shares the same rootless identity, regardless of where their ancestors come from. Examples would be Seattle, Houston, Atlanta, and the entire state of Florida.
These day, whatever prejudice there is is against recent immigrants (Latinos, Middle Easterners, etc.). However, most of these prejudices are among older people, cultural conservatives and the lower middle class. Latinos and Asians face much less discrimination than my ancestors faced in the early 20th century.
I would say that with the exception of Brazil, the U.S. is the least racist country on the planet.
Thanks for the information and it largely confirms what I have read from books and witnessed personally. New Zealand inherits from the British way that people are quite socialist, but when it comes to race, they are very politically incorrect and and unashamedly open of their racism, at least when it comes to realizing they have to live with people speaking Dutch, drinking coffee, eating Chinese food.