Why would anyone disapprove of interracial marriage if they weren't racialist? This is an embarrassing and desperate attempt at damage control.

You assume that most people were racial ideologues like yourself. Most of them weren't and just wanted to focus on having families with people they were already culturally similar to, and geographically near. Considering settler populations would have been culturally very distinct, Poles and Anglos marrying would have been odd. But it never really stopped American pioneers from hooking up with Indian Squaws and freed slaves.

Your perspective is that most Americans always had a strict racial-socialist ordering in mind for all of society. They didn't. Racial socialism is odd, even for bigots. Of all the actual racists I've met in real life, absolutely none of them were white nationalists, white supremacists, or racialist ideologues.

I'm not even German, though I appreciate you making an allowance for essentialism when you want to attack (a specific ethnicity of) white people, like the good little liberal you are.

You espouse a worse form of Germanism than the Hessians ever could have. And again, it's not the essential nature of a Germanic Volk. It's a culture that Germans who were bastardized by the 30 years war and conquered by Prussia end up resorting to, aiming towards collectivism, rather than supporting individualism and liberty in a society. It's the essence of a cultural difference. That's why American germans helped us firebomb German cities, rather than join the German-American Bund. They found National Socialist Germany so utterly repulsive that it's destruction was necessary.

They may have gone a little over-board, but we can argue about whether Germans are better off dead than Socialist. The long term damage of Socialism is worse than firebombing, I'd say.