This is an instance where I agree with “family association and criminal conduct” being an issue for clearance holders. If you are around drug use/sales whether it be family or not, you shouldn’t be holding a clearance. Just because they are your family doesn’t mean you aren’t held to the same standard as other clearance holders.
-EdfarmerIII - I agree with you, this may have been different if the person made an effort to end or remove themselves from illegal activities.