https://reason.com/2023/07/29/the-return-of-mdma/ "services such as testing partygoers' drugs for dangerous ingredients"
There was a country which was doing something like that, I think it was New Zealand? My memory is foggy.

It'd be interesting to get data on how that goes.

"In 2002, a senator from Delaware named Joe Biden proposed the Reducing Americans' Vulnerability to Ecstasy (RAVE) Act."
Hehehe, it's always him.