Substance abuse—whether involving alcohol (Guideline G) or drugs (Guideline H)—is one of the most common challenges for security clearance holders. The question is not just "Can I keep my clearance?" but "How do I demonstrate the stability and judgment required to protect national security?"

Guideline G: Alcohol Consumption
The government is concerned with alcohol use that leads to impaired judgment or criminal conduct (like a DUI). To mitigate these concerns, an applicant must show:

Completion of Treatment: Successful participation in a recognized rehabilitation program.
Abstinence or Controlled Use: Evidence of a stable, long-term change in behavior.
Support Systems: Involvement in programs like Alcoholics Anonymous (AA) or ongoing counseling.

Guideline H: Drug Involvement & The Marijuana Gap
In 2026, the most frequent Guideline H issue is the use of marijuana in states where it is legal. Federal law still prohibits marijuana use, and "I thought it was legal in my state" is not a valid legal defense.

Mitigation for drug involvement focuses on:
Frequency and Recency: How long has it been since the last use?
Disassociation: Have you cut ties with drug-using associates and environments?
A Pledge of Future Abstinence: A signed, credible statement promising never to use illegal substances while holding a clearance.

The Power of Self-Reporting
Under Continuous Vetting, the government will eventually find out about an arrest or a positive test. Reporting the issue yourself and immediately seeking treatment shows the high level of "candor" and "judgment" that adjudicators look for under the Whole Person Concept.

If you have questions or concerns about your security clearance, contact the Security Clearance Professionals, at securityclearancepro.com, asya@securityclearancepro.com, or call (904) 884-5891.