Adults over 21 have been able to buy cannabis legally in Maryland since July 2023, and that changed nothing for the state’s federal workforce. A Maryland Federal Employee attorney fields the same call regularly: someone bought a legal product at a licensed dispensary, tested positive at work, and cannot understand how a lawful purchase became a removal proposal. The answer is that your employer follows federal law exclusively.

Does state legalization protect a federal employee?

No. Cannabis remains a Schedule I controlled substance under the Controlled Substances Act, and federal employment rules are written against that classification rather than against state law.

The governing instrument is Executive Order 12564, signed in 1986, which established the drug-free federal workplace and states plainly that the use of illegal drugs, whether on or off duty, is inconsistent with the conduct expected of federal employees. Off-duty use in your own home in Maryland is squarely within that prohibition.

A federal rescheduling proposal has been pending and is worth watching, but a move to a lower schedule would not by itself make use permissible for federal employees or clearance holders. Those frameworks turn on more than the schedule number.

What thresholds does a federal drug test actually use?

Federal testing follows the Mandatory Guidelines for Federal Workplace Drug Testing Programs issued by the Substance Abuse and Mental Health Services Administration, and the numbers are published.

For urine, the initial screening cutoff for the marijuana metabolite is 50 nanograms per milliliter, and confirmation testing by mass spectrometry uses a cutoff of 15 nanograms per milliliter of delta-9 THC carboxylic acid. Oral fluid testing, which some agencies now use, screens at 4 nanograms per milliliter with confirmation at 2.

A positive result goes to a Medical Review Officer who gives you a chance to offer a legitimate medical explanation. A Maryland medical cannabis certification is not one, because Schedule I substances cannot be lawfully prescribed and there is no valid prescription to produce. For transportation safety-sensitive positions, 49 CFR 40.151(e) says it directly: the officer must not accept an assertion that a physician recommended marijuana.

What happens after a positive test?

Executive Order 12564 requires the agency to initiate disciplinary action, and it requires removal proceedings for an employee who refuses counseling through an Employee Assistance Program or who tests positive again afterward.

There is a narrow safe harbor. An employee who voluntarily identifies drug use before being notified of a test, obtains counseling, and then refrains is generally protected from discipline for that use. The protection disappears once you are selected for testing, so the window closes earlier than most people assume.

If removal is proposed, the action typically proceeds under Chapter 75 of Title 5, meaning you get at least 30 days notice, seven days to reply, and an appeal to the Merit Systems Protection Board where the Douglas factors govern the penalty.

Does past use disqualify you from a clearance?

Not automatically. Current use effectively does.

Clearance decisions follow Security Executive Agent Directive 4, the adjudicative guidelines in effect since 2017. Guideline H covers drug involvement and substance misuse, including illegal use of a controlled substance regardless of state legality. Guidance issued by the Director of National Intelligence in 2021 confirmed that prior recreational use is not automatically disqualifying and should be weighed case by case.

Mitigation under Guideline H is concrete rather than sympathetic. Adjudicators look for use that was infrequent or remote in time, a change in circumstances making recurrence unlikely, disassociation from drug-using associates, completion of any treatment program, and a signed statement of intent to abstain with the understanding that any violation results in automatic revocation.

Continued use while holding a clearance is a different matter. It creates a Guideline H problem and a candor problem under Guideline E, and a false answer to the drug use questions on the SF-86 can be charged separately under 18 U.S.C. § 1001.

Why is CBD riskier than it looks?

Hemp-derived CBD containing no more than 0.3 percent delta-9 THC was removed from federal control by the 2018 Farm Bill, so buying it is not itself illegal. The risk is chemical rather than legal.

These products are inconsistently manufactured and frequently mislabeled, and independent testing has repeatedly found THC content above what the packaging claims. A test does not measure intent. It measures metabolite concentration, and the Medical Review Officer will not accept an explanation that you only used CBD.

Delta-8 THC products carry more exposure still, since they are intoxicating and will produce positive results. Maryland brought intoxicating hemp products under its cannabis regulatory structure in 2023, which improved consumer protection at the state level and changed nothing about how a federal lab reads your sample.

What can a Maryland Federal Employee attorney actually challenge?

Not the clearance decision itself. Under Department of the Navy v. Egan, decided by the Supreme Court in 1988, the Board cannot review the merits of a clearance denial or revocation. It can review whether the agency followed its own procedures and whether your position genuinely required the clearance.

What remains contestable is the chain of custody, the collection procedure, whether your position was properly designated for testing, whether any reasonable suspicion basis was documented, and the penalty analysis under Douglas. Contractors at Fort Meade and elsewhere follow a different path, with hearings before the Defense Office of Hearings and Appeals rather than the Board.

Legal in Maryland and permissible for a federal employee are two unrelated questions, and the gap between them has cost people careers built over decades. If you have been notified of a positive result, received a statement of reasons, or are weighing whether past use needs to be disclosed, speak with a Maryland Federal Employee attorney before you respond in writing.