The way I understood it was that the other candidates all think that "Mexicans" (the word is generic among Anglos for Spanish-speaking people anywhere in the Southwest,
Your theory is flawed because most americans today aren't anglos. Most americans are a big mix of people. Euro-americans being the majority, barely.
Anglos(a germanic tribe) were a small minority in Briton just like the saxons. Welsh and celtic rooted people were the majority(as the bbc has reported recently). Those brits that came over to america were mainly welsh and celtic rooted people, not anglos. Though the anglo-germanic tribes were so fierce that their langauge did make way and take over in Briton.
(1) I didn't pose a "theory", just said how it sounded to me.
(2) The term "Anglo" is generally used, in areas of the US where there are large Hispanic communities, to denote the English-speaking community; for instance here in New Mexico "Anglo" includes African- as well as European-Americans. In that sense most Americans
are Anglos.
(3) The Germanic tribe you refer to were the Angles (not Anglos), who together with Saxons, Jutes and Danes colonized the eastern and northern 2/3 of (what became) England in the latter half of the first millennium CE, pushing the Celtic people to the west; their language eventually became dominant throughout what is now England, as well as Scotland (the lowland Scots are Anglo-Saxons, the highlanders Celts, descendants of Irish colonists from about a thousand years ago, mixed with the original Picts and other inhabitants, who've left no trace other than occasional mentions in Roman chronicles).
(4) The name of the country/place is Britain; its inhabitants are Britons, who may indeed be genetically mostly Celtic, despite having been overrun by Romans, Angles/Saxons/Jutes/Danes, and Norman French over the last 2000 years. I don't know the research on this, but do know the Germanic tribes came in great numbers over several centuries; unlike the Romans and the later Normans, they were not just conquerers but colonists looking for land due to population pressures on the Continent. I'd say the history of Great Britain (England + Scotland) is so mixed it'd be hard to define anyone there as "purely" of any particular racial ancestry (outside of Wales).
(5) Well, my paternal ancestors came here over 300 years ago, bearing a name that came to Britain with the Norman conquest in 1066, while my maternal ancestors brought a Celtic name apparently from north central England. Anyway, we're all here now.