Maybe the main reason the US exists was not to be a racist white homeland, but to get rid of the British and to create a nation for freedom and opportunity.

Europeans didn't emigrate to the US to own slaves and hang out with white people.

http://www.ushistory.org/us/25f.asp

http://www.pewresearch.org/fact-tank/2015/10/07/a-shift-from-germany-to-mexico-for-americas-immigrants/

https://classroom.synonym.com/challenges-faced-immigrants-19th-century-9525.html

If white people wanted to live with white people then why didn't they stay in Europe?

If white people wanted to own slaves then why didn't they move to Brazil?

https://www.npr.org/sections/parallels/2013/11/12/244563532/photos-reveal-harsh-detail-of-brazils-history-with-slavery

https://userpages.umbc.edu/~bouton/History407/SlaveStats.htm

Do you think an immigrant from Ireland in 1875 came to the US to own slaves?

If the US was supposed to be a white country then why could Chinese come to the USA in 1870?

https://www.uscis.gov/history-and-genealogy/our-history/agency-history/early-american-immigration-policies