"Diversity" in your example seems to include black people and hispanic people, but disregards the diversity in "white" culture (there's a huge split between English and French), and the entire Asian continent.

Denying people of low skill and educational backgrounds isn't inherently racist - an African-American software developer gets the same NAFTA rubber-stamp as a Polish-American developer. French-speaking workers have it even easier, as French-speakers get preferential treatment. (Areas of Africa natively speak French, if you're insistent that Africa is the source of all "diversity".)

I don't see how letting low-skill, uneducated people immigrate to a country helps it. Immigration isn't a charity.