Adjudicative Guideline H: Drug Involvement is another concern that could lead to the denial or revocation of a security clearance. Drug involvement includes the abuse of illicit and legal drugs. However, a review of security clearance cases demonstrates that marijuana continues to be a concern for many applicants. Additionally, new state laws, public opinion, and attitudes may make it tempting for Americans to casually use marijuana and other drugs.
Recently Colorado and other states have legalized the use of marijuana and some states also allow the use of medical marijuana. However, where national security is concerned, marijuana and the abuse of legal and illicit drugs for any reason can be cause for denial of a security clearance.
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