A Transportation Security Administration determination can prevent a maritime worker from obtaining a Transportation Worker Identification Credential, stop a commercial driver from adding or renewing a hazardous materials endorsement, or invalidate a credential that has already been issued.

The correct response depends on what TSA found and where the matter stands procedurally.

You may need to:

  • Correct an inaccurate or incomplete criminal-history record
  • Prove that an arrest did not result in a disqualifying conviction
  • Challenge TSA’s classification of a state offense
  • Establish the correct conviction or release date
  • Appeal an Initial Determination of Threat Assessment
  • Request a waiver based on rehabilitation and present circumstances
  • File an appeal and waiver in the alternative
  • Respond to an immediate revocation
  • Seek Administrative Law Judge review after a waiver denial

National Security Law Firm represents TWIC and hazardous materials endorsement applicants nationwide. We have handled TSA credential matters since 2016 and have represented applicants in hundreds of TWIC and HME cases.

For qualifying initial-stage TWIC and HME appeals or waivers, our flat legal fee is $2,495. We review the TSA notice, obtain ordinary court records, analyze the alleged disqualification, develop the necessary evidence, prepare the submission, and manage the matter through the covered TSA stage.

If TSA has denied or revoked your credential, do not wait until the response period is nearly over.

Schedule a free consultation or call (202) 600-4996.

Choose the TWIC or HME Resource You Need

TWIC and HME applicants are generally subject to closely related federal security threat assessment standards, but the credentials serve different industries and involve different issuance procedures.

TWIC Appeals and Waivers

A Transportation Worker Identification Credential is generally required for workers who need unescorted access to secure areas of federally regulated maritime facilities and vessels.

If you received an adverse TSA letter concerning a TWIC, visit our main TWIC waiver and appeal lawyer page to learn about representation, eligibility, evidence, fees, and the appeal and waiver process.

Additional TWIC resources include:

Hazmat Endorsement Appeals and Waivers

A hazardous materials endorsement, commonly called an HME or hazmat endorsement, allows a qualified commercial driver to transport hazardous materials requiring placards.

TSA conducts the federal security threat assessment, but the driver’s state licensing agency issues, renews, transfers, suspends, or revokes the endorsement. A successful TSA determination does not replace the driver’s separate obligation to satisfy state CDL requirements.

If TSA denied your hazmat endorsement eligibility, visit our hazardous materials endorsement lawyer page for information about HME appeals, waivers, and representation.

Additional HME resources include:

What Does TSA Review for a TWIC or Hazmat Endorsement?

TSA conducts a federal security threat assessment before determining whether an applicant is eligible for a TWIC or HME.

Depending on the credential and circumstances, TSA may review:

  • Fingerprint-based criminal-history information
  • Immigration status and lawful presence
  • Terrorism-related and intelligence information
  • Certain mental-capacity determinations
  • Wants, warrants, and pending indictments
  • Arrests for potentially disqualifying offenses without reported dispositions
  • Identifying information supplied in the application
  • Information obtained through recurrent vetting or later government reporting

The existence of a criminal record does not automatically mean that an applicant is permanently barred. TSA’s regulations identify particular offenses, time periods, and waiver rules.

The analysis may depend on:

  • Whether the applicant was convicted
  • Whether the offense was a felony
  • The actual statute and offense elements
  • Whether the offense falls within a permanent or interim category
  • The conviction date
  • The release-from-incarceration date
  • Whether the conviction was reversed, vacated, expunged, or pardoned
  • Whether an outstanding warrant or indictment has been resolved
  • Whether the identified condition is eligible for a waiver

A commercial background report or an applicant’s recollection is rarely enough to resolve a complicated case. The official judgment, charging document, sentencing record, corrections record, and post-conviction orders may all matter.

What TSA Letter Did You Receive?

The title and procedural posture of the notice are critical. Do not assume that every adverse TSA letter is simply a “denial.”

You may have received:

  • A Preliminary Determination of Ineligibility
  • An Initial Determination of Threat Assessment
  • An Initial Determination and Immediate Revocation
  • A Final Determination of Threat Assessment
  • A denial of a waiver request
  • A request for additional records
  • A notice involving other security analyses
  • A state notice concerning the suspension or revocation of an HME

Read every page, including the instructions and attachments. Preserve the envelope, electronic delivery information, and any proof showing when the notice was received.

For immediate procedural guidance, review what to do after receiving a TSA Preliminary Determination of Ineligibility or Initial Determination of Threat Assessment.

How Long Do You Have to Respond to TSA?

Under 49 C.F.R. § 1515.5, an applicant generally must initiate an ordinary appeal within 60 days after receiving TSA’s Initial Determination of Threat Assessment.

An applicant may ordinarily initiate the appeal by:

  • Submitting a written reply disputing TSA’s determination
  • Requesting copies of the releasable materials on which TSA relied
  • Requesting an extension in accordance with the regulation

When TSA supplies requested materials, a separate regulatory period generally applies to the applicant’s written reply.

Different deadlines can apply at later stages. For example, a request for Administrative Law Judge review of a qualifying TSA waiver denial generally must be filed within 30 calendar days after service of the denial.

Always follow the instructions in the particular notice. Do not calculate a deadline solely from the date printed on the first page without considering the date and method of service.

Should You File a TSA Appeal or a Waiver?

An appeal and a waiver make fundamentally different arguments.

Issue Appeal Waiver
Core position TSA’s factual or legal determination is wrong A disqualifying condition exists, but TSA should grant discretionary relief
Typical evidence Certified dispositions, corrected records, statutes, judgments, release records, dismissal orders Rehabilitation, employment, treatment, community support, responsibility, mitigation, and present circumstances
Example TSA treated an arrest as a conviction The conviction is accurately reported but is eligible for a waiver
Requested result Withdrawal of the adverse determination Discretionary determination that the applicant does not pose a security threat
Main risk Failing to prove the record error or legal mismatch Submitting a weak rehabilitation record or inadvertently conceding disputed facts

When an Appeal May Be Appropriate

An appeal may be appropriate when:

  • The record belongs to another person.
  • TSA treated an arrest as a conviction.
  • The charge was dismissed or nolle prossed.
  • The applicant was acquitted.
  • A felony charge was reduced to a misdemeanor.
  • The conviction was reversed, vacated, or otherwise altered.
  • TSA relied on the wrong conviction date.
  • TSA relied on the wrong release date.
  • The offense falls outside the applicable seven-year and five-year periods.
  • The state offense does not match TSA’s identified federal category.
  • An outstanding warrant has been recalled.
  • An indictment has been dismissed.
  • TSA relied on inaccurate immigration or mental-capacity information.

When a Waiver May Be Appropriate

A waiver may be appropriate when the disqualifying information is accurate, the condition falls within TSA’s waiver authority, and the applicant can demonstrate that the applicant does not pose a security threat.

A waiver submission may address:

  • The nature and circumstances of the offense
  • The applicant’s age and circumstances at the time
  • Time elapsed since the conduct
  • Completion of the sentence
  • Compliance with probation or parole
  • Restitution
  • Treatment, counseling, or recovery
  • Stable employment
  • Professional responsibility
  • Family and community involvement
  • Character references
  • The employment consequences of losing the credential
  • Other evidence of rehabilitation and present reliability

Not every disqualifying condition is waivable. Eligibility must be determined under the precise regulatory category TSA identified.

When Both May Be Necessary

Some applicants should appeal while requesting a waiver in the alternative.

For example, an applicant may argue that a state conviction does not legally fit TSA’s identified category but also demonstrate eligibility for discretionary relief if TSA rejects that interpretation.

Alternative submissions require care. A waiver request should not inadvertently concede a disputed conviction, date, or legal classification that remains part of the appeal.

What If TSA Found an Arrest Without a Disposition?

Fingerprint-based criminal-history reports sometimes show an arrest without establishing what happened afterward.

The missing record may fail to show that:

  • No charges were filed.
  • The prosecutor declined the case.
  • The charge was dismissed.
  • The applicant completed diversion.
  • The felony was reduced to a misdemeanor.
  • The applicant was acquitted.
  • The conviction was later vacated or reversed.
  • A warrant or indictment was resolved.

Under 49 C.F.R. § 1572.103(d), TSA may require an applicant to provide written proof that an arrest for a listed offense did not result in a disqualifying conviction. The applicant generally has 60 days after service of TSA’s notification to supply the proof.

Depending on the case, the required evidence may come from:

  • The criminal court or clerk of court
  • The prosecutor
  • The arresting agency
  • A state criminal-history repository
  • A corrections department
  • The FBI
  • An appellate court
  • Another official custodian of the record

Correcting the source record may also be important. Otherwise, the same omission can create problems during a later TWIC renewal, HME application, employment background check, or other federal credential review.

What Happens If a TWIC or HME Is Immediately Revoked?

TSA does not always wait for a credential to expire. In qualifying circumstances, it may issue an Initial Determination and Immediate Revocation.

For a TWIC holder, immediate invalidation can result in the loss of unescorted access to secure maritime areas. TSA may notify the worker and, where appropriate, the employer, Federal Maritime Security Coordinator, and Coast Guard.

For an HME holder, TSA may notify the driver, the employer where appropriate, and the state licensing agency. The state may then revoke the hazardous materials endorsement even though the underlying commercial driver’s license remains subject to separate state and federal requirements.

An appeal does not necessarily restore the credential while the matter is pending.

If your credential has suddenly become invalid, review our guide to TSA immediate revocation of a TWIC or hazardous materials endorsement.

What If TSA Denied the Waiver?

A denied TWIC or HME waiver may qualify for review by a TSA Administrative Law Judge under 49 C.F.R. § 1515.11.

The request generally must be filed within 30 calendar days after service of the waiver denial. The filing must clearly identify the disputed issues and include the materials required by the regulation.

One of the most important limitations is that the ALJ ordinarily reviews the evidence already submitted to TSA. The applicant generally cannot repair an incomplete waiver by introducing new evidence during the ALJ proceeding. If new evidence is necessary, a new waiver request may be required, and the pending ALJ matter may be dismissed.

ALJ review may involve:

  • A written administrative record
  • A request for an in-person hearing
  • Limited discovery
  • Testimony and cross-examination as permitted
  • A substantial-evidence standard
  • Further review by the TSA Final Decision Maker
  • Potential judicial review in a federal court of appeals

For a complete discussion, visit TSA waiver denied: Administrative Law Judge review.

ALJ proceedings and later review are advanced stages. They are not included in NSLF’s standard $2,495 initial-stage appeal or waiver fee unless expressly stated in a separate written engagement agreement.

Does Losing a TWIC Affect a Merchant Mariner Credential?

Potentially.

A TWIC and a Merchant Mariner Credential are distinct credentials, but an adverse TSA security determination can create consequences for a mariner’s eligibility and Coast Guard credentials.

Depending on the circumstances, TSA may notify the Coast Guard, and the Coast Guard may consider suspension-and-revocation action or other credential consequences under its regulations.

Mariners should not assume that appealing the TSA determination automatically prevents every separate Coast Guard consequence. The TSA and Coast Guard processes may require coordinated evaluation.

For help with separate Coast Guard credential proceedings, visit our Merchant Mariner Credential lawyer page.

Does a Favorable TWIC Assessment Help With an HME Application?

TSA’s regulations recognize certain comparable security threat assessments. A qualifying applicant may be eligible for reduced enrollment procedures or fees when applying for another covered credential.

However, a comparable federal assessment does not eliminate every state requirement for obtaining or renewing a hazardous materials endorsement. The driver must still satisfy the relevant state CDL rules, application procedures, testing requirements, and other Federal Motor Carrier Safety Administration standards.

Applicants should verify current enrollment rules, fees, and required documents with TSA’s official enrollment provider and the appropriate state driver-licensing agency.

When Do You Need a TWIC or HME Lawyer?

Federal law does not require every applicant to hire an attorney.

Legal representation may be unnecessary when:

  • The application is routine.
  • The applicant has no potentially disqualifying history.
  • TSA has not issued an adverse notice.
  • The only issue is scheduling enrollment or checking application status.
  • A straightforward missing disposition can be resolved with an easily obtained certified record.

Representation may be more useful when:

  • Your employment depends on the credential.
  • TSA relied on an incomplete or inaccurate criminal record.
  • Several criminal cases are involved.
  • The final disposition is unclear.
  • TSA treated an arrest as a conviction.
  • The offense classification is legally disputed.
  • Conviction and release dates must be calculated.
  • A conviction was expunged, vacated, reversed, or pardoned.
  • You may need an appeal and waiver in the alternative.
  • TSA immediately revoked an existing credential.
  • Your waiver was denied.
  • The response deadline is approaching.
  • The TSA matter may affect a Merchant Mariner Credential or state-issued HME.

The earlier the record is reviewed, the easier it is to identify missing documents and avoid an incomplete submission.

What Does National Security Law Firm Do?

For qualifying TWIC and HME matters, National Security Law Firm handles the legal and evidentiary process rather than simply providing a generic form or template.

Our work may include:

  • Reviewing every page of the TSA notice
  • Identifying the determination and response deadline
  • Determining whether to appeal, seek a waiver, or pursue both
  • Requesting TSA’s releasable materials when appropriate
  • Identifying inaccurate or incomplete criminal-history information
  • Obtaining ordinary court and disposition records
  • Reviewing charging documents and judgments
  • Obtaining sentencing and release records
  • Calculating applicable conviction and incarceration periods
  • Analyzing the state statute and TSA’s regulatory classification
  • Developing rehabilitation and mitigation evidence
  • Preparing the written legal submission
  • Organizing and labeling exhibits
  • Submitting the matter to TSA
  • Tracking the case through the covered stage
  • Responding to ordinary TSA requests for additional information within the agreed scope

We have handled TWIC and HME matters since 2016 and have represented applicants in hundreds of TSA credential cases nationwide.

That experience does not give NSLF special influence over TSA. It helps us identify the records, legal classifications, deadlines, and evidentiary issues that commonly determine whether a submission succeeds.

How Much Does a TWIC or HME Lawyer Cost?

National Security Law Firm charges a flat legal fee of $2,495 for qualifying initial-stage TWIC or HME appeal or waiver representation.

The covered work generally includes:

  • Review of the TSA determination
  • Deadline and procedural analysis
  • Ordinary court-record procurement
  • Criminal-history and legal analysis
  • Evidence development
  • Preparation of the appeal or waiver
  • Organization of exhibits
  • Submission to TSA
  • Management through the covered initial stage

Unless expressly included in the signed engagement agreement, the $2,495 fee does not cover:

  • Unusual third-party expenses
  • Extensive litigation to correct a source record
  • Expungement or post-conviction proceedings
  • A separate waiver filed after completing an appeal
  • Administrative Law Judge review
  • An administrative hearing
  • TSA Final Decision Maker review
  • Federal-court litigation
  • Merchant Mariner Credential proceedings
  • State CDL or licensing proceedings
  • An employment dispute

The precise services and covered procedural stage are always governed by the signed written engagement agreement.

Financing and the Written Refund Guarantee

Eligible clients may use Pay Later by Affirm to divide the legal fee into monthly payments. Available terms and financing decisions are determined by the financing provider.

National Security Law Firm also offers a written refund guarantee in qualifying accepted TWIC and HME matters.

The refund guarantee is not a promise that TSA will approve an appeal, grant a waiver, issue a TWIC, approve HME eligibility, or direct a particular result. TSA and, where applicable, state licensing agencies control their own decisions.

When the guarantee applies, the signed engagement agreement identifies the covered result and the circumstances under which NSLF will refund the covered $2,495 legal fee if that result is not achieved.

The guarantee:

  • Applies only when expressly included in the signed engagement agreement
  • Covers only the legal fee identified in that agreement
  • Is subject to all stated terms, exclusions, and client responsibilities
  • Does not control or guarantee a government decision
  • Does not necessarily cover third-party costs or advanced proceedings
  • Does not guarantee a particular employment outcome

We do not accept every matter for guaranteed representation. We first review the TSA notice, procedural stage, alleged disqualification, deadlines, available records, and known facts.

Frequently Asked Questions About TWIC and HME Matters

Are the TWIC and HME background checks the same?

They are closely related TSA security threat assessments governed by substantially overlapping federal standards. The credentials are not identical, however. TWIC is associated with secure maritime access, while an HME is issued through a state driver-licensing agency for qualified commercial drivers.

Does any felony disqualify you from a TWIC or HME?

No. TSA’s regulations identify particular permanent and interim disqualifying felony categories. The analysis depends on the actual offense, final disposition, dates, incarceration history, and applicable waiver rules.

Do misdemeanors disqualify you?

The criminal-offense provisions identify specified felonies. A misdemeanor is not automatically disqualifying merely because the conduct sounds similar to a listed offense. TSA may still review other security, immigration, mental-capacity, warrant, or application-related concerns.

Is an arrest the same as a conviction?

No. An arrest or charge does not establish that the person was convicted. If a fingerprint-based record does not contain the disposition, TSA may require official written proof of the outcome.

What does TSA consider a conviction?

TSA applies the federal definition of “convicted” in 49 C.F.R. § 1570.3. The result may not always match the terminology used by a state court, particularly in cases involving deferred adjudication, expungement, diversion, vacatur, or other post-conviction relief.

Can an expunged conviction still affect a TWIC or HME?

Potentially. The effect depends on the substance of the relief and TSA’s federal definition of “convicted.” An order that merely seals public access may be treated differently from a judgment reversed or vacated because of a legal defect.

Is simple drug possession automatically disqualifying?

Simple possession is not separately listed as a disqualifying felony under the controlled-substance category in 49 C.F.R. § 1572.103. Distribution, possession with intent to distribute, and importation are treated differently. The actual statute and judgment must be reviewed.

Can I appeal and request a waiver at the same time?

Potentially. Some applicants dispute TSA’s factual or legal conclusion while requesting a waiver in the alternative. The arguments should be structured carefully to avoid conceding a disputed issue.

Can I continue working while an appeal is pending?

That depends on the credential, the type of TSA notice, the employer, the facility, and any state or Coast Guard action. An appeal does not automatically restore a TWIC or HME that has been immediately invalidated or revoked.

Does hiring a lawyer guarantee approval?

No. TSA controls the federal security threat assessment, and no attorney can ethically guarantee a particular government result. NSLF’s written refund guarantee applies only to qualifying accepted matters under the precise terms of a signed engagement agreement.

Schedule a Free TWIC or HME Consultation

A TWIC or hazardous materials endorsement can determine whether you are able to continue working in your chosen occupation. If TSA has issued an adverse notice, the strongest response begins with identifying the exact procedural stage, obtaining the official records, and deciding whether the facts support an appeal, a waiver, or both.

National Security Law Firm represents TWIC and HME applicants nationwide. We have handled TSA credential matters since 2016 and have represented applicants in hundreds of cases.

Our flat legal fee for qualifying initial-stage TWIC and HME appeals or waivers is $2,495. Financing may be available, and qualifying accepted matters may include a written refund guarantee subject to the precise terms of the engagement agreement.

To evaluate the matter, we generally need every page of the TSA notice and any available criminal-court or background-check records.

Schedule a free consultation or call (202) 600-4996.

Official TWIC and HME Resources

Author: Katherine O’Brien, Esq., Founder, National Security Law Firm
Attorney Reviewed: August 26, 2026

This page provides general information and is not legal advice. Viewing this page or contacting National Security Law Firm does not create an attorney-client relationship. Past results do not guarantee future outcomes. Any legal fee, scope of representation, financing arrangement, or refund guarantee is governed exclusively by a signed written engagement agreement.