Under federal marijuana law, adult-use cannabis is still a Schedule I controlled substance and illegal to possess, sell or transport, even in states that have legalized it. In April 2026 the federal government moved marijuana held under a state medical marijuana licence, and FDA-approved marijuana products, to Schedule III. A broader proceeding to move all marijuana to Schedule III is on hold as of October 2026.
Most Americans now live in a state where cannabis is legal in some form, yet federal law has changed far more slowly. That gap explains why you can buy cannabis legally in Seattle or Portland but cannot take it on a plane, onto federal land or across a state line. This guide explains where federal law stands as of October 2026 and what it means for consumers. It is general information, not legal advice.
Federal Marijuana Law at a Glance
| Topic | Federal status as of October 2026 |
|---|---|
| Adult-use (recreational) marijuana | Schedule I under the Controlled Substances Act; illegal federally |
| State-licensed medical marijuana | Moved to Schedule III by a Justice Department order in April 2026 |
| FDA-approved marijuana products | Schedule III |
| Rescheduling all marijuana | DEA hearing held June 29 to July 15, 2026; stayed September 29, 2026; no decision |
| Hemp-derived THC (delta-8, THCA flower) | Excluded from the federal definition of hemp from November 12, 2026 (synthetics) and December 11, 2026 (naturally occurring cannabinoids) |
| Crossing state lines | Illegal, including between two legal states |
| Flying | Illegal; TSA refers cannabis it finds to local police |
| Federal land | Illegal, including national parks and forests |
Is Marijuana Legal Under Federal Law?
Not for adult use. The Controlled Substances Act of 1970 placed marijuana in Schedule I, the category for drugs the government considers to have a high potential for abuse and no accepted medical use. Possessing, growing, selling or transporting a Schedule I drug is a federal crime.
States have legalized cannabis under their own laws, and the federal government has generally not prosecuted individuals who follow those state laws. But state legalization does not change federal law. Where federal law applies directly, such as at airports, on federal land, at the border, in federal workplaces and in federal benefits, adult-use cannabis is still illegal.
The 2026 Rescheduling Order: What Changed
Rescheduling has been building for years. In 2023 the Department of Health and Human Services recommended moving marijuana to Schedule III, and in 2024 the DEA proposed doing so. The process stalled until 2026.
- April 2026: The Justice Department issued a final order moving two categories to Schedule III: FDA-approved marijuana products and marijuana held under a state medical marijuana licence. The order relied on the government’s treaty-obligation authority rather than a full rulemaking.
- Still Schedule I: Adult-use marijuana, including the recreational markets in Washington, Oregon and other states, and unlicensed marijuana.
- June 29 to July 15, 2026: The DEA held a hearing on moving all marijuana to Schedule III. Final briefs were filed August 17, and the DEA’s own brief supported rescheduling.
- September 29, 2026: The chief administrative law judge stayed the proceeding while he considers adding a new Government Accountability Office report to the record. The judge’s eventual recommendation is not binding; the DEA Administrator makes the final decision.
- Court challenges: Lawsuits over the April order are pending in the U.S. Court of Appeals for the D.C. Circuit.
What Schedule III Would Mean, and What It Wouldn’t
Moving marijuana to Schedule III is often described as federal legalization. It is not. Schedule III drugs, such as ketamine and anabolic steroids, are still controlled substances that can legally be dispensed only under federal rules. Rescheduling would not make adult-use sales federally legal, would not let you carry cannabis across state lines and would not change TSA screening.
The biggest practical change is for businesses. Section 280E of the federal tax code bars businesses that traffic in Schedule I or II substances from deducting ordinary business expenses. Businesses operating with Schedule III products fall outside it, which is why the April 2026 order matters to state-licensed medical operators, while adult-use stores remain covered until all marijuana is rescheduled. Rescheduling would also make medical research easier.
The Federal Hemp Changes: Delta-8, THCA and Hemp THC Products
The 2018 Farm Bill legalized hemp, defined as cannabis with no more than 0.3% delta-9 THC. That definition opened the door to intoxicating hemp products, such as delta-8 THC made from CBD and high-THCA “hemp” flower, sold in gas stations and online across the country.
Congress closed that gap in a funding law signed on November 12, 2025. The new definition:
- measures total THC, including THCA after heating, instead of delta-9 alone;
- caps finished hemp products at 0.4 milligrams of total THC per container; and
- excludes cannabinoids that are synthesized or converted, rather than naturally produced by the plant.
The changes were originally due to take effect November 12, 2026. A law signed September 2, 2026, delayed the start to December 11, 2026 for naturally occurring cannabinoids, but synthetic cannabinoids still lose hemp status on November 12, 2026. Products outside the new definition can be treated as controlled substances. In legal states, the safer source for THC products is a state-licensed dispensary, where products are tested and labelled.
Crossing State Lines, Flying and Federal Land
- State lines: Taking cannabis from one state to another is illegal under federal law, even between two legal states such as Washington and Oregon.
- Flying: Airports are subject to federal law. The TSA says its officers look for security threats, not drugs, but refer any cannabis they find to local law enforcement. Carrying cannabis on a flight is illegal under federal law.
- National parks and forests: Federal land, including Crater Lake, Mount Rainier and Olympic national parks and every national forest, follows federal law. Cannabis is illegal there even inside a legal state.
- International borders: Carrying cannabis into or out of the United States is a federal crime, including to and from Canada, where cannabis is legal.
Federal Rules That Still Affect Legal-State Consumers
- Firearms: Federal law prohibits “unlawful users” of controlled substances from possessing firearms, and the federal firearm purchase form asks about marijuana use. This rule has faced court challenges; anyone affected should talk to a lawyer.
- Federal jobs and safety-sensitive work: Federal employees and workers under Department of Transportation drug-testing rules, such as commercial drivers and pilots, can lose their jobs for cannabis use regardless of state law.
- Military: Service members are subject to military drug rules, and bases are federal property.
- Immigration: Cannabis use or employment in the cannabis industry can affect visa and citizenship applications, even in legal states.
- Public housing: Federally assisted housing follows federal drug rules.
- Banking: Because adult-use cannabis is federally illegal, many banks avoid the industry, which is why so many dispensaries are cash and debit only. Federal banking reform has been proposed repeatedly but has not become law.
How Federal Enforcement Works in Legal States
Federal prosecutors rarely pursue individuals who follow their state’s cannabis laws. Congress has also repeatedly barred the Justice Department from spending money to interfere with state medical marijuana programs, a budget rider first passed in 2014. In 2022 and 2023, presidential pardons covered many past federal convictions for simple possession.
That restraint is policy, not law. It does not protect anyone at a federal facility, on federal land, crossing a border or in the situations listed above.
Federal vs. State Law: Washington and Oregon
Washington and Oregon show how the two systems overlap. Both states license and tax cannabis stores, set purchase limits and allow adults to use cannabis on private property. Federal law still governs their airports, national parks and forests, military bases, and the Columbia River crossing between them. Read the full state guides:
- Washington marijuana laws: 1-ounce limit, no recreational home grow, 37% excise tax
- Oregon marijuana laws: 2 ounces a day, 4 plants per household, delivery
Our state guides for other states are being updated; see California, Colorado, New York and Texas.
From the editor, James Buddsey: I have followed federal marijuana policy since long before any state legalized adult use, and 2026 is the first year federal law has actually moved. But it moved for medical marijuana, not for the recreational market most readers shop in. Until Congress or the DEA acts on adult use, the old rules still apply at every airport, park entrance and state line.
Federal Marijuana Law FAQ
Is marijuana legal federally?
No, not for adult use. Recreational marijuana remains a Schedule I controlled substance under federal law as of October 2026. State-licensed medical marijuana and FDA-approved products moved to Schedule III in April 2026.
Has marijuana been rescheduled to Schedule III?
Partly. An April 2026 Justice Department order moved state-licensed medical marijuana and FDA-approved marijuana products to Schedule III. A DEA proceeding to reschedule all marijuana was stayed on September 29, 2026, with no decision yet.
Does Schedule III make weed legal?
No. Schedule III drugs are still federally controlled. Rescheduling would mainly change business taxes under Section 280E and make research easier; it would not legalize adult-use sales or interstate travel with cannabis.
Can I fly with weed if both states are legal?
No. Airports and flights are subject to federal law, and the TSA refers cannabis it finds to local police.
Is delta-8 THC federally legal?
Not for much longer. A federal law signed in November 2025 excludes synthetic and converted cannabinoids, such as delta-8 made from CBD, from the definition of hemp starting November 12, 2026, and limits other hemp THC products from December 11, 2026.
Can I use cannabis in a national park?
No. National parks and forests are federal land, where cannabis is illegal even if the surrounding state has legalized it.
Can I take cannabis from Washington to Oregon?
No. Carrying cannabis across any state line is illegal under federal law, even between two legal states.
Find a Licensed Dispensary
The safest way to buy cannabis is from a state-licensed store. Browse our licensed dispensary directory for Washington and Oregon, where every listing shows its state licence number.
This guide is general information about federal law as of October 2026, not legal advice. Federal cannabis policy is changing; check the Federal Register, the DEA and the linked sources for the latest.