Marijuana
The company I work for will discontinue testing for THC/CBD in the very near future. It's a huge corporation with sites in states that allow legal use. I think there has been lawsuits against the company for prohibiting using a "legal substance" in those states. So, instead of the legal hassle and expense, they are waving the white flag. Great development!
Hopefully, over the next 10 years it is totally legal nationwide.