It's all about leverage. If your drug use could leave the possibility of someone have leverage they can use against you - yes you will be disqualified. IMO, sec

It's all about leverage. If your drug use could leave the possibility of someone have leverage they can use against you - yes you will be disqualified. IMO, security clearance investigations are not about finding out naughty things from your past simply to find them, they are just a search of "how vulnerable will this person be to being blackmailed?". They want the list of people who can pressure you to be non-existant or incredibly small.