Yup. It's expected that you'll have to piss in a cup for basically any standard low-level hourly job. I understand it's less common for high-level, white collar type jobs.

It's legal because racism and voter suppression.

"You understand what I'm saying? We knew we couldn't make it illegal to be either against the war or black, but by getting the public to associate the hippies with marijuana and blacks with heroin. And then criminalizing both heavily, we could disrupt those communities. We could arrest their leaders. raid their homes, break up their meetings, and vilify them night after night on the evening news. Did we know we were lying about the drugs? Of course we did." — former Nixon domestic policy chief John Ehrlichman