[Not actually an update – the bit after the link went missing and I didn’t notice]
I’ve discussed before Vox day’s ideological nationalism/racism is very much in line with the 19th century Know Nothings. Unfortunately, I don’t have many clear examples of him going after the Irish. While US anti-Irish racism is sometimes exaggerated as a kind of way of minimising the deeper and more violent anti-black racism, it shouldn’t be minimised either.
As it happens, the ruination of the United States is the result of the “contributions” of two groups of immigrants, Irish and Jewish.
Of course, Americans of Irish descent are not now the subject of particular racism, unlike the lingering anti-Semitism which Vox also stokes up. What is notable is how once racism is adopted ideologically, it tends to end up picking the same targets as it scrabbles around trying to make reality fit an absurd hypothesis.