Reasons for the Denial or Revocation of a Security Clearance

If your security clearance has been denied or revoked, you’re likely feeling anxious, frustrated, and uncertain about your future. For federal employees, contractors, and service members, losing clearance can jeopardize your livelihood, reputation, and career trajectory. Understanding why a clearance was denied—and what you can do about it—is essential to protecting your interests and restoring your status.

At National Security Law Firm, we’re here to help you navigate this process strategically and maximize your chance of success.

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What Happens When a Clearance Is Denied or Revoked?

After submitting your application, the U.S. government typically issues a determination within six months. If your clearance is denied or revoked, you will receive a Statement of Reasons (SOR). The SOR is a formal document that explains the basis for the adverse decision and identifies the specific security concerns raised during the adjudication process.

Critically, the SOR will also inform you of your rights, including:

• The right to submit a written rebuttal, and

• The right to request a hearing before an administrative judge (in most cases, such as those governed by the Defense Office of Hearings and Appeals (DOHA))

Responding properly to an SOR is your opportunity to challenge the allegations and demonstrate that you remain eligible for access to classified information.

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The National Security Adjudicative Guidelines

All security clearance decisions—across military, civilian, and contractor roles—are governed by the National Security Adjudicative Guidelines. These guidelines serve as the legal and policy framework for evaluating whether an individual poses an unacceptable risk to national security.

Adjudicators are required to consider:

1. Thirteen specific areas of concern (detailed below);

2. Mitigating factors that may reduce or eliminate security concerns; and

3. The individual’s background and conduct as a whole—known as the “whole person concept.”

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Mitigation Is Possible—And Often Overlooked Without Legal Guidance

Importantly, the Adjudicative Guidelines don’t just list reasons why a clearance may be denied—they also list factors that can mitigate those concerns and lead to a favorable decision.

These mitigating factors vary depending on the issue involved but often include:

• Successful completion of a rehabilitative program

• Passage of time demonstrating sustained good conduct

• Evidence of extenuating circumstances

• Voluntary disclosure of the issue

• Demonstrated behavioral change or improved judgment

Whether your issue involves a one-time mistake or a pattern of conduct, it’s essential to frame your case using the proper mitigation strategies. An experienced security clearance attorney can help ensure that every relevant mitigating factor is presented in a clear, compelling way.

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The 13 Adjudicative Guidelines

Each of the following 13 categories can be used as grounds to deny or revoke a security clearance:

• Guideline A: Allegiance to the United States

• Guideline B: Foreign Influence

• Guideline C: Foreign Preference

• Guideline D: Sexual Behavior

• Guideline E: Personal Conduct

• Guideline F: Financial Considerations

• Guideline G: Alcohol Consumption

• Guideline H: Drug Involvement and Substance Misuse

• Guideline I: Psychological Conditions

• Guideline J: Criminal Conduct

• Guideline K: Handling Protected Information

• Guideline L: Outside Activities

• Guideline M: Use of Information Technology

Each case is evaluated on its own facts, and one guideline may trigger multiple overlapping concerns.

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Key Factors Considered for Mitigation

When evaluating whether concerns under any of the 13 guidelines can be mitigated, adjudicators weigh a wide range of variables, including:

• The nature, extent, and seriousness of the conduct

• Circumstances surrounding the incident(s)

• The frequency and recency of the behavior

• The applicant’s age or maturity at the time

• Whether conduct was voluntary or coerced

• The presence of rehabilitation or evidence of permanent change

• The individual’s motivation at the time of the behavior

• Potential for undue influence or coercion

• The likelihood of recurrence or future risk

Even a single incident may be enough to justify revocation if the government deems it to reflect questionable judgment, instability, or an unacceptable security risk. On the other hand, longstanding issues can often be mitigated with compelling documentation, proactive steps, and strategic legal argument.

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What Happens During the Revocation Process?

When revocation is being considered, adjudicators are expected to assess how the individual responded to the concern. They will evaluate whether you:

• Voluntarily disclosed the information

• Were truthful and forthcoming during interviews or polygraph exams

• Sought treatment or guidance, when appropriate

• Have taken steps to resolve the issue

• Show evidence of sustained positive behavior

• May require a temporary suspension of clearance pending resolution

These considerations all reflect the “whole person concept” emphasized in Department of Defense Directive 5220.6, which directs adjudicators to evaluate the totality of the circumstances before making a final determination.

According to the directive, any doubt concerning a person’s eligibility must be resolved in favor of national security. That’s why your response must eliminate doubt—not just explain your side.

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Why Legal Representation Matters

While you are permitted to submit a response to the SOR on your own, doing so carries significant long-term risks. Your SOR response becomes a permanent part of your security file. If it is unclear, defensive, or fails to include proper mitigation, it can undermine future reinvestigations—even if you succeed this time.

An attorney who understands the nuances of clearance law can help you:

• Frame your response in terms of the Adjudicative Guidelines

• Identify and present relevant mitigation strategies

• Avoid common mistakes and red flags

• Anticipate and counter government arguments

• Create a professional record that strengthens your clearance history

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NSLF Can Help You Defend—and Win—Your Clearance Case

If your security clearance has been denied or revoked, you don’t have to face this process alone. At National Security Law Firm, our experienced attorneys specialize in helping federal employees, service members, and contractors defend their clearances. We understand the national security clearance system from the inside out—and we know how to put the Adjudicative Guidelines to work for you.

Our team includes former military JAGs, federal agency advisors, and government security clearance adjudicators. We’re here to help you preserve your career, your reputation, and your future.

👉 Book your free consultation today.

National Security Law Firm: It’s Our Turn to Fight for You