State Attorney Generals Scrutinize Federal Hemp Definition


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The federal definition of hemp was supposed to do one simple thing: separate non-intoxicating industrial hemp from marijuana. Instead, it became the legal version of leaving one kitchen window open during mosquito season. Something small slipped through, and now the whole house is swatting at it.

That “something” is the market for intoxicating hemp-derived cannabinoids such as delta-8 THC, delta-10 THC, THC-O, HHC, and similar products that exploded after the 2018 Farm Bill legalized hemp defined by a narrow threshold: cannabis with no more than 0.3% delta-9 THC on a dry-weight basis. State attorneys general have spent the last two years making the same point, louder each time: that definition may have worked for raw plant material, but it has been a poor referee for gummies, drinks, vapes, candies, and other modern consumer products that can absolutely get people high while still being sold as “hemp.”

What began as a technical dispute has become a full-scale public policy fight involving public health, consumer protection, interstate commerce, youth access, and the future of the legal hemp industry. In other words, this is no longer just a cannabis story. It is a federalism story, a product safety story, and a story about what happens when lawmakers write a narrow agricultural definition and entrepreneurs treat it like a chemistry challenge.

How the federal hemp definition created a legal headache

The 2018 Farm Bill removed hemp from the federal definition of marijuana and defined it broadly as Cannabis sativa L. and its derivatives, extracts, cannabinoids, isomers, acids, salts, and salts of isomers, so long as the material contains no more than 0.3% delta-9 THC on a dry-weight basis. On paper, that sounded neat and tidy. In practice, it left several giant questions wobbling on the table.

First, the law focused on delta-9 THC, not total THC and not the many other cannabinoids that can be intoxicating. Second, it relied on a dry-weight test, which makes sense for hemp biomass but gets weird fast when applied to consumer edibles and beverages. A heavy gummy or a canned drink can remain below 0.3% delta-9 THC by weight while still containing a potent intoxicating dose in milligrams. Third, the law did not squarely stop manufacturers from converting hemp-derived CBD into other THC-like compounds through chemical processes.

That gap is exactly what attorneys general say has been exploited. In their 2024 letter to Congress, a bipartisan coalition of 21 attorneys general argued that the Farm Bill’s “glaring vagueness” fueled a flood of intoxicating hemp products and undermined state efforts to protect public health. In 2025, the pressure intensified when a coalition of 39 state and territory attorneys general urged Congress again to clarify the federal definition of hemp and stop what they described as the continued sale of unregulated, intoxicating THC products.

That escalation matters. When a coalition grows from 21 attorneys general to 39 state and territory attorneys general in roughly a year and a half, it is not a whisper from the states. It is a siren.

Why attorneys general are so focused on this now

1. The products are being sold in ordinary retail channels

One of the biggest complaints from state law enforcement officials is not simply that intoxicating hemp products exist. It is where they are being sold. These products are not confined to licensed cannabis dispensaries. They have appeared in gas stations, smoke shops, convenience stores, vape stores, and online marketplaces, often outside the tightly regulated systems that states use for marijuana.

That difference is huge. Licensed cannabis programs usually require age-gating, testing, packaging rules, warnings, and tracking. The hemp gray market has often operated with fewer guardrails and plenty of branding that looks more like a snack aisle had a reckless weekend.

2. Federal agencies have raised safety concerns

The FDA has repeatedly warned that delta-8 THC products have not been evaluated or approved for safe use. The agency has flagged concerns about adverse events, contamination, inconsistent labeling, and youth-friendly packaging. FDA warning letters involving cannabis-derived products, including delta-8 THC products, have continued in recent years, which tells you this is not some dusty issue parked in 2022 and forgotten.

The CDC has also warned that products labeled as hemp or CBD may contain delta-8 THC and can cause unexpected intoxication. That warning lands differently when you imagine a shopper thinking they bought something mellow and ending up with a product that behaves less like herbal tea and more like an ambush.

3. Poisoning and pediatric exposure fears changed the tone

Attorneys general are not framing this as a theoretical loophole. They are talking about youth access, accidental ingestion, and poison control exposure trends. The FDA reported hundreds of adverse event reports tied to delta-8 THC and thousands of poison center exposure cases during the early surge of the market, including pediatric cases. The CDC likewise highlighted severe pediatric incidents and rising emergency department concern.

Once that kind of data enters the conversation, the debate shifts. It stops being a niche argument about cannabinoid taxonomy and becomes a consumer protection issue with children squarely in the middle of it.

The core legal complaint: delta-9-only rules do not measure real-world intoxication

This is the attorneys general’s central argument, and it is hard to ignore: a product can comply with a delta-9 dry-weight limit and still be intoxicating. That is because the legal test measures only one cannabinoid in one way, while the marketplace has become expert at formulating products around that one metric.

Think of it like regulating restaurant calories by only counting lettuce. You might get a very healthy salad. You might also get bacon, cheese, fried onions, ranch dressing, and a side of regret. The number on the label would not tell the whole story.

State officials increasingly prefer broader standards such as total THC, milligram caps per serving or package, age restrictions, child-resistant packaging, testing, labeling, and restrictions on chemically synthesized cannabinoids. In other words, they want the law to focus on how a product behaves in the real world, not just on whether its delta-9 percentage can squeeze under one narrow federal line.

How states are responding while Congress stalls

Because Congress has not yet delivered a clean nationwide fix, states have been building their own patchwork. That patchwork is exactly what attorneys general say is not enough, but it also shows where policy is heading.

California: from concern to crackdown

California became one of the clearest examples of a state deciding it had seen enough. In 2024, Attorney General Rob Bonta joined other attorneys general in urging Congress to tighten the Farm Bill language. Around the same time, California moved aggressively at the regulatory level. State emergency regulations required hemp foods, beverages, dietary supplements, and food additives intended for human consumption to have no detectable THC, barred sales to people under 21, and limited products to five servings per package.

That is not a nudge. That is a state essentially saying, “If you want intoxicating THC products, they belong in the cannabis system, not in the hemp aisle pretending to be harmless.”

Virginia: total THC and ratio rules

Virginia took a different approach that still points in the same direction. The state’s hemp enforcement framework limits products offered for retail sale to 0.3% total THC and generally no more than two milligrams of total THC per package unless a product meets a specific CBD-to-THC ratio. Virginia also requires labeling, certificates of analysis, child-resistant packaging for edible hemp products containing THC, and retail registration requirements.

Virginia’s model is important because it shows how states are moving past the narrow delta-9-only test. Total THC is the phrase doing the heavy lifting there, because total THC is closer to how intoxication works in actual consumers.

New Jersey: revised definitions and milligram caps

New Jersey’s updated framework is another signal flare. The state now regulates intoxicating hemp-derived products and, beginning in April 2026, excludes from “hemp” certain products that exceed a total THC threshold, involve chemically synthesized cannabinoids, or contain cannabinoids not capable of being naturally produced by the plant. New Jersey also uses a 0.4 milligram total THC per container benchmark in key parts of the law and prohibits sales of THC-containing human-consumption products to people under 21.

That is a telling move: New Jersey did not wait for Congress to write a cleaner playbook. It started rewriting the playbook itself.

Arkansas: keep industrial hemp, target intoxicants

Arkansas offers yet another model. In 2023, the state enacted legislation aimed at prohibiting the production and sale of intoxicating substances derived from industrial hemp while preserving hemp for industrial uses. The statute targeted delta-8, delta-10, THC acetate esters, and products produced through synthetic chemical conversion.

That distinction matters because it cuts against a talking point often heard in the debate: that any tighter definition of hemp would destroy all hemp commerce. Not necessarily. Several states are trying to preserve non-intoxicating hemp uses while walling off the intoxicating products that attorneys general say never should have ridden into the market under the hemp banner in the first place.

What federal regulators have signaled

Even at the federal level, the direction of travel is not subtle. The FDA has maintained that delta-8 THC products are not approved for safe use and has continued enforcement through warning letters. The DEA has also signaled that synthetic THC remains a controlled substance issue. In its 2024 proposed marijuana rescheduling rulemaking, DEA made clear that synthetically derived THC would remain in Schedule I and that the proposal would not alter hemp’s separate legal status.

That may sound technical, but it has real consequences. It means the federal government itself is not exactly sending love letters to the synthetic-intoxicant side of the hemp market. Attorneys general are using that reality to argue that Congress should bring the hemp definition back in line with what federal agencies and states already recognize: intoxicating products deserve more scrutiny, not less.

What Congress is really being asked to do

The attorneys general are not all asking for the exact same sentence-by-sentence rewrite, but their wish list is pretty consistent.

They want Congress to clarify that the federal hemp definition does not protect intoxicating cannabinoids simply because they are derived from hemp. They want states’ authority to regulate or prohibit such products made unmistakable. They want the law to account for total THC and chemically synthesized cannabinoids. And they want to stop the argument that the Farm Bill accidentally created a permanent nationwide safe harbor for products that behave like marijuana but are sold like gum.

Put differently, the states are asking Congress to stop pretending the market is still just about rope, grain, fiber, and CBD lotion. The market evolved. The law did not. Now the legal cleanup crew has arrived.

What this means for hemp businesses, cannabis operators, and consumers

For legitimate hemp farmers, this fight is uncomfortable because they are being squeezed between two narratives. On one side is the original promise of industrial hemp as an agricultural commodity. On the other is a booming intoxicant market that many traditional hemp operators did not ask for but now cannot escape being associated with.

For cannabis businesses in regulated states, the complaint is simpler: they are forced to follow expensive testing, taxation, packaging, and licensing rules while hemp-derived intoxicants often compete in looser retail channels. That is why this issue has become not only a public health argument but also a market fairness argument.

For consumers, the takeaway is even more basic. “Hemp” does not automatically mean non-intoxicating, mild, or risk-free. That label can now cover everything from harmless hemp seed products to potent psychoactive items with inconsistent testing and confusing packaging. If that sounds absurd, it is. But that absurdity is exactly why attorneys general keep marching back to Congress.

Experiences from the real-world hemp gray market

The most useful way to understand this issue is not to imagine a sterile legal memo. It is to imagine the actual people living with the consequences of the federal definition as written.

Start with a parent who walks into a convenience store and sees brightly colored gummies labeled as hemp sitting a few feet away from energy drinks and potato chips. The parent reasonably assumes “hemp” means something calm, botanical, maybe even boring. Instead, the product may contain enough intoxicating cannabinoids to seriously impair an adult or create an emergency for a child. That experience, repeated in different forms across the country, explains why public health officials and attorneys general keep talking about labels, copycat packaging, and youth appeal.

Now picture a state regulator trying to enforce common-sense guardrails with a federal definition that keeps getting used like a hall pass. The regulator knows the product is intoxicating. The retailer knows the product is intoxicating. The customer probably knows too. But the package says hemp, the manufacturer points to the delta-9 percentage, and suddenly everyone is arguing over chemistry instead of acknowledging the obvious. For enforcement agencies, that is maddening. It is like trying to police speed by measuring only the color of the car.

Then there is the small hemp farmer who got into the business to grow a legitimate crop for fiber, seed, wellness products, or non-intoxicating extracts. That farmer did not necessarily sign up to be lumped together with a fast-moving market for synthetic or semi-synthetic THC products sold in neon packaging. Yet that is what happened. As the intoxicating segment grew, it began to define the public conversation around hemp itself. For many traditional operators, the loophole has been less of a golden ticket and more of a reputational house fire.

Licensed cannabis operators have their own version of frustration. They pay for compliance, testing, packaging, taxes, restricted retail channels, security, and endless rules that could make a saint mutter under their breath. Then they watch hemp-derived intoxicants show up down the street in stores with fewer compliance burdens and sometimes lower prices. From their perspective, the market is not just uneven. It is upside down.

And finally, consider the consumer who is not trying to outsmart the law, launch a cannabinoid startup, or debate statutory construction. That person just wants to know what they are buying. Will it get them high? Is it tested? Is it safe? Is it legal in their state? Can their teenager buy it? On too many shelves, the answer has been a shrug wearing attractive packaging.

These are the experiences hiding behind the policy debate. They explain why attorneys general keep using phrases like public safety, health crisis, youth access, and gray market. They are not merely arguing about wording in a farm statute. They are reacting to what that wording has produced in homes, stores, poison centers, and state enforcement offices. Once you see the issue through that lens, the scrutiny makes perfect sense.

Conclusion

The fight over the federal hemp definition is really a fight over whether the law should describe the market as it exists now or as lawmakers hoped it would exist in 2018. State attorneys general are making it clear that the old definition no longer works on its own. A delta-9 dry-weight threshold may separate hemp from marijuana in theory, but it does not reliably separate non-intoxicating products from intoxicating ones in the real world.

That is why scrutiny is intensifying. The states have watched intoxicating hemp products spread through ordinary retail channels, collide with public health concerns, and expose the limits of a narrow federal definition. Some states have moved on their own. Others want Congress to fix the problem at the source. Either way, the age of treating “hemp” as a one-size-fits-all category is ending. And honestly, it was a strange little fiction while it lasted.

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