Disparate impact laws are a spin off from civil rights act 1964 so you’d have to repeal at least a part of that act. Much of modern society is shaped by these laws so you’d be completely changing the structure of society. Many people benefit from the status quo and those people, who have substantial means, will fight any attempts to repeal these laws.

I want these laws changed, it is the whole reason I brought up the issue, but I also understand how monumentally difficult it would be to do that. I suspect the US would have to degrade far further to even consider this.