nothing in your comment disproves my point about US culture being a mixture of all the immigrant populations that have settled here. Also until very recently, US immigration controls were really terrible. In the past, the only country with amazing and consistent immigration controls is Japan at over 99% enforcement. In light of that, it isn't surprising that we're witnessing population collapse in Japan due to xenophobia. Coincidentally with better immigration controls, the US is now at a fertility rate of 1.6 instead of the population sustaining 2.1

> It previously peaked at around 14.8% in the late 19th century. This started causing substantial anti-immigrant sentiment to emerge as it was felt to be having an overall negative affect on culture, society, labor, etc.

Yes, in the 19th century there was a lot of racism and prejudice directed towards the Irish, German, and Italian immigrants. Not surprisingly, they did not destroy US society or culture. Instead, the US absorbed respective parts of their cultures and assimulated all of their populations over decades. now they are an integral part of America