State laws are not supposed to conflict with federal law.
In a case like that, they are sort of hoping it goes to the Supreme Court and the court finds in their favor.
One of the issues marijuana growers and sellers are having is that they have trouble establishing bank accounts because banks don't want to be in violation of federal regulation.
The people passing pro mj laws and starting legitimate mj businesses could be viewed as a quiet, non violent civil rights movement. Everyone doing stuff in that space is sticking their neck out.
I'm allergic to mj, so I'm not willing to stick my neck out, but I am for the legalization of mj. I have done some research on the topic and I have tremendous respect for the people quietly working to make this legal in the US.
It was never clear what would happen if I didn't. I'm not certain you can force someone to sign a contract as a condition of employment.
My buddy came up with an ingenious solution-- we signed each other's documents in our own handwriting, so if we ever had to we could say, "That's not my handwriting."