Reading some questions and comments I am struck by those who want to know their ethnicity.
What is ethnicity? Per the dictionary:
he fact or state of belonging to a social group that has a common national or cultural tradition."the interrelationship between gender, ethnicity, and class"
Just because you supposedly have a percentage of Jewish, German irish, African or NA DNA does not mean that such is your ethnicity.
The question is what social group do you identify with? You could be raised an Christian, but identify with Muslims or Jews.
Take the case of three groups of Slavs. Bosnians, Croats, Serbs.
All three are Slavs, however one identifies as Muslim one as Roman Catholic and the other as Orthodox, but it was not always such, but identities were imposed or taken up by ancestors hundreds or thousands of years ago by invaders who imposed their religion upon the peoples they subjugated.
A child born to Irish parents, but adopted into and raised by German parents will identify as a German.
And there really is no such thing as German, jewish, irish, British DNA, the DNA or Europe is mixed, mixed by migration, conquest, even rape.
There are predominant haplogroups, but they are not homogeneous across all populations.
Richard III's YDNA is haplogroup G2. Haplogroup G2 is found in North Ossetia, descendants of on group of Sarmatians, and Sarmatians were themselves of mixed DNA. Was Richard III an Ossetian or even a Sarmatian? Of course not.
What is Jewish DNA? Virtually all haplogroups are represented in the jewish populations. It is believed that a certain strain (subclade) is found amongst males of Cohanim ancestry, but that is only a small portion of the population and not representative of all. And what of, say a Muslim, who shares that particular subclade, descended say from a convert, is he Muslim or Jewish?
What is the ethnicity of those born in the U.S.A.? It is as varied as the patchwork of a quilt.
Think of those living within the borders of this country who have a common regional and/or cultural tradition, and one that is exclusive of or opposed to those of other cultural traditions.
Lots of those last I looked