Marijuana Is Legal in My State but Illegal Federally: What That Means for Your Rights

Time-sensitive notice (as of late June 2026): Federal marijuana law is actively changing. A DOJ/DEA final order effective April 28, 2026, created a new two-tier framework. A broader rescheduling hearing began June 29, 2026. Verify the current DEA/DOJ status before relying on any information here.

If marijuana is legal where you live, you might assume you can use it without legal risk. That assumption is partly right and partly dangerous. Your state has decriminalized or legalized marijuana — but the federal government still treats most marijuana as a Schedule I controlled substance. Both legal systems apply to you at the same time, and which one matters depends on who is acting and where. Getting that distinction wrong can cost you a job, housing, federal benefits, or worse.

The Core Conflict: Two Laws, One Person

The Supreme Court made this conflict clear in Gonzales v. Raich, 545 U.S. 1 (2005): Congress has the power to criminalize the cultivation and possession of marijuana under federal law even when it is grown and used entirely within a state that permits it for medical purposes. That ruling means state legalization does not override federal prohibition. Both systems exist at once.

As of April 28, 2026, a DOJ/DEA final order created a two-tier federal framework under 21 U.S.C. § 812:

• Schedule III: FDA-approved marijuana drug products, and marijuana possessed and distributed under a qualifying state medical marijuana license. Schedule III is still a controlled substance — not "legal" under federal law.
• Schedule I: All other marijuana, including recreational and adult-use marijuana, even where a state has fully legalized it.

A broader DEA rescheduling hearing began June 29, 2026. That process could further change the federal landscape. See the DOJ/DEA final order at federalregister.gov and monitor for updates.

Employment

There is no general federal law protecting your right to use marijuana — even off the clock, even legally under state law. The Americans with Disabilities Act, 42 U.S.C. § 12114, explicitly excludes employees who are currently engaging in the illegal use of drugs from its employment protections. Because marijuana is a federally controlled substance, courts have generally held the ADA does not require employers to accommodate its use, including medical marijuana use.

Some states have passed their own laws protecting employees who use medical marijuana or who use marijuana off-duty where it is legal under state law. Those protections come entirely from state law and vary widely. Even where state law protects you, safety-sensitive positions, federal contractors, and federally regulated transportation workers are typically carved out. See observed.org's guide to marijuana and employment for state-by-state detail.

Drug Testing

Standard urine tests for marijuana detect past metabolites — chemical byproducts of marijuana use — not current impairment. A test taken on Monday can show a positive result from marijuana used legally on Saturday. Whether your employer can act on that result depends heavily on your state's law and your type of job. A growing number of states limit or prohibit pre-employment THC screening, but those limits vary and typically exclude safety-sensitive roles.

Driving

Every state makes it illegal to drive while impaired by marijuana, but the standards differ sharply. Some states use a per se THC blood limit, where any detectable amount above the threshold is a crime regardless of actual impairment. Others require proof of actual impairment. There is no single national THC limit comparable to the 0.08 BAC standard for alcohol. Check your state's standard — and be aware that legal off-duty use can still trigger a charge in states with per se limits.

Firearms

Under 18 U.S.C. § 922(g)(3), it is unlawful for a person who is an unlawful user of or addicted to any controlled substance to possess a firearm. Marijuana remains federally controlled. In United States v. Hemani, No. 24-1234 (U.S. June 18, 2026), the Supreme Court held unanimously that prosecuting someone under § 922(g)(3) based solely on marijuana use violates the Second Amendment. That ruling is narrow: it did not legalize gun possession for all drug users, left open cases involving someone armed while actively intoxicated, and did not affect the felon-in-possession ban under § 922(g)(1). The intersection of marijuana and firearms law is unsettled. See observed.org's article on the Hemani decision for a full breakdown.

Housing

In federally assisted housing — public housing projects and Section 8 voucher programs — federal law has allowed housing authorities to deny tenancy or pursue eviction for marijuana use because it remains federally controlled, regardless of state legalization. Private landlords set their own policies through lease terms, including smoke-free or drug-free clauses. Some states and localities have enacted tenant protections that limit what landlords can do regarding off-duty marijuana use, but those protections vary widely. If you live in federally assisted housing or your lease has a drug clause, state legalization may provide little protection.

Travel

Airport security is administered by the TSA, which operates under federal law. Bringing marijuana through airport security — even within a state that has legalized it — risks federal consequences. Crossing state lines with marijuana is a federal matter regardless of the laws in either state. National parks, federal buildings, post offices, and military installations are all federal jurisdiction where marijuana is illegal regardless of what any state permits. Non-citizens should be aware that marijuana use or possession — even where legal under state law — can trigger immigration consequences including inadmissibility or deportation. Non-citizens should consult an immigration attorney before relying on state legalization.

Child Custody

Family courts decide custody based on what is in the child's best interests. A parent's marijuana use can be raised as a factor — especially regarding supervision, safety, or impairment around children — even where use is legal under state law. How much weight courts give this varies by state and by the facts of the specific case. Legal marijuana use is not automatically disqualifying, but it is not automatically protected either.

Criminal Records

Many states that legalized marijuana also created processes to seal, expunge, or vacate old marijuana convictions. Eligibility and procedures vary by state, and some processes are automatic while others require a petition. Federal marijuana convictions are a separate matter and are not affected by state record-clearing laws. See observed.org's record-clearing guides for state-specific information.

What You Can Do

• Know which system applies in your situation. Ask whether the actor is a federal or state entity, whether you are on federal property, and whether your employer or landlord is subject to federal rules.
• Check your state's current protections. Employment, testing, tenant, and driving standards vary significantly by state. Do not assume another state's rules apply to you.
• Monitor the DEA/DOJ rescheduling process. The broader hearing that began June 29, 2026, could change the federal landscape. Check federalregister.gov for updates.
• If you are a non-citizen, get immigration-specific advice. State legalization does not protect against federal immigration consequences. Consult an immigration attorney before using marijuana or before any related encounter with authorities.
• Review your lease and employment policies. Federal contractors, federally assisted housing tenants, and safety-sensitive workers face stricter rules that state law generally cannot override.

This is general legal information, not legal advice. Marijuana law is changing quickly at both the federal and state levels. Verify your state's current law and the current federal schedule status through the DEA or DOJ before making any decisions. If your situation involves specific legal risk, consult a licensed attorney in your state.