I'm living with someone who is considering getting a medical marijuana card.

I'm thinking that if they do this and consume marijuana, that will make them a prohibited person.

SOP for me already is to keep all firearms not in my direct control locked in a cabinet or lock box that only I have access to.

I believe I should be in the clear from what I have read about others who live with an individual who is a prohibited person, but I want to double check.

Depending on the responses here I may consider consulting with an attorney.