This is actually a big hurdle for legalization, IMO. I have friends who live in states where recreational marijuana is legal, but they can't smoke because their

This is actually a big hurdle for legalization, IMO. I have friends who live in states where recreational marijuana is legal, but they can't smoke because their jobs do random drug tests. They do safety critical work where being under the influence can cause serious harm (think construction). It makes sense that the employer needs to make sure everyone is sober, but its a huge pain for everyone that the only way to make sure you are sober _right now_ is to make sure you've been sober all month.