The problem with that is that it is not legal here so you really don't get a free pass because you debauched it up elsewhere....Medical marijuana is not a free pass either. If you need it, you probably aren't working a physical job anyway.

In that case, I would think an employer would work with that person on an individual basis. Like was said before, the primary reason to test people is for safety and lower insurance.

You still need to show you are not impaired no matter what you're operating. While I don't get moralistic over weed, I don't want my pilot, train engineer, other drivers, etc....to be high on it.