Recruiting employees, which you've acknowledged is plagued by systemic racism.
Again, it's not racism. I'll acknowledge the results might have a similar effect, but there isn't any intent to keep anyone of a particular race or ethnicity out of a group, but to hire people who will contribute to the group's cohesiveness and efficiency.
In terms of the example I made, I pointed out that a very religious blonde Christian would be no more likely to be hired than a woman in a burqua, and that a Ukrainian with fractured English would be as challenged as an Iranian.
In terms of immigration, the entire reason for the existence of the program is economic. Why, then, would we not recruit the immigrants who are most economically successful? That these immigrants also tend to be from cultures most similar to Canada's is a huge bonus, imho, since I like our culture a lot more than I do the cultures of the majority of our source countries.