Combined of What?

In September 2025 we published a correction about ourselves. We had described the federal per-container threshold as a cap on total THC. It is not. We fixed the article, we fixed the record, and then we did the thing we usually recommend: we encoded the correction so no future post of ours could repeat it. There is a rule in our publishing pipeline that refuses to ship any copy containing the phrase we got wrong.

That rule still works. It has also stopped being much use, and this morning we found out why.

The provision, stated the way the statute states it

Under P.L. 119-37 §781, a final hemp-derived cannabinoid product falls outside the federal definition of hemp if it contains greater than 0.4 milligrams combined total per container of:

• (aa) total tetrahydrocannabinols, including tetrahydrocannabinolic acid; and
• (bb) any other cannabinoids that have similar effects — or are marketed as having similar effects — on humans or animals as a tetrahydrocannabinol, as determined by the Secretary of Health and Human Services.

Two limbs, added together against one figure. We have located no determination by the Secretary populating limb (bb), and an unpopulated limb is not an empty one.

The word that carries all of that is combined. It is the word that tells you the 0.4 is measured across two groups rather than one. For about a year it has been a reliable tell: if a page said "combined total", the writer had been to the statute. If it said THC and stopped, they had not.

Two pages, one phrase, two different caps

We read both of these first-party this morning.

The first, published 23 October, states the threshold as "0.4 MG COMBINED TOTAL PER CONTAINER of: Total tetrahydrocannabinols, including THCA plus certain other cannabinoids that the Secretary of Health and Human Services determines have — or are marketed as having — effects similar to THC." Both limbs. The Secretary named. The unit stated as the retail package rather than the serving. That is the formulation almost nobody writes, and it is right.

The second, published 16 August, says no finished hemp consumer package "may exceed 0.4 milligrams of total combined THC", and defines that as "combined total THC (including Delta-9, THCA, and Delta-8)" — a formula aggregating delta-9, precursor acids such as THCA, and isomers into a single potency metric. The Secretary of Health and Human Services does not appear on the page. Limb (bb) does not appear on the page.

Read those two sentences next to each other. They share the phrase. They do not share a structure.

The first combines limb (aa) with limb (bb) — two groups of cannabinoids, one of which a federal official has to name before anybody knows what is in it.

The second combines analytes inside limb (aa) — three named compounds, rolled into one number. It is the single-limb reading with the word combined parked in front of it.

Which one the answer engines picked

We ask the day's question in at least two phrasings every morning and write down what the answer says rather than which pages it lists. Today we asked, as directly as it can be asked, whether the 0.4 mg threshold is a total-THC cap or a combined total.

The answer came back calling it a "0.4mg total THC cap", then defining that as "the maximum allowable amount of combined total THC (including Delta-9, THCA, and Delta-8) at 0.4 milligrams per finished container", and adding, for emphasis, "This is a combined total cap, not just delta-9 THC alone."

That is the second page, adopted whole, including its correction-shaped vocabulary. The summary is not merely wrong about the provision. It is wrong about the provision while sounding like it has read the correction — the distinguishing word is there, doing the opposite of distinguishing.

A different phrasing, asked about what Texas retailers face in December, produced the same structure in plainer clothes: "total allowable THC (including THCA) per retail container will cap at 0.4 milligrams, regardless of how much the product weighs or how many servings it contains."

That one is worth pausing on, because half of it is right. The threshold is measured per container rather than per serving, and "regardless of how many servings it contains" is a correct and useful thing to tell an operator. The analyte structure in the same sentence is wrong. A sentence can be half-sourced, and the half that is right is what makes the other half land.

Neither of these is a source and we have adopted nothing from either. We record them as a reading of what operators are being told.

The part about our own gate

Here is the uncomfortable half of the morning.

Our pipeline rule bans a string: the words for four tenths of a milligram, followed by total THC. We ran it this morning against the four formulations above, because reasoning about a regular expression is not the same as executing it.

It blocks the version we published in 2025. It passes the "combined total THC (including Delta-9, THCA, and Delta-8)" version. It passes "0.4 milligrams of total combined THC". It passes "total allowable THC (including THCA) per retail container will cap at 0.4 milligrams".

Three of the four wrong formulations go straight through, and all three drop limb (bb) just as completely as the one that is blocked.

The gate was never checking whether copy understood the provision. It was checking for a sequence of characters, which is the only thing a gate of that kind can check. That was enough while the error had one dominant phrasing. The error has since learned to say combined, and a string match cannot follow it.

We are not going to change that rule today. Editing a claim gate in the middle of the cycle it is gating is the one repair you do not make under a deadline. It is written down as a gap, which is the honest state of it.

There is a second demonstration in this very article, pointing the other way. The rule carries a deliberate exemption: quote the bad phrase and it will not fire, because reproducing an error in order to name it is the one place that phrase belongs. The exemption is implemented as "is there a quotation mark immediately before this". In the paragraph above, the bad phrase sits in the middle of a longer quotation, four words in. The gate blocked our own correction, and we had to re-cut the quotation around the fragment to get the sentence through.

So the same string match misses three live versions of the error and stops one accurate description of it. Those are not two bugs. They are one design, seen from both sides: a check on characters cannot tell the difference between asserting a thing and reporting it.

So what is the test now

Ask what comes after "of".

"Combined total" on its own tells you nothing any more. The next clause tells you everything:

If the sentence lists compounds — delta-9, delta-8, THCA, delta-10 — it is describing one limb, no matter how many compounds it names and no matter whether it calls that list combined. A longer list of analytes is still a single group.

If the sentence names two groups, and the second is defined by a determination of the Secretary of Health and Human Services, it is describing the provision.

That is a two-second check and it does not require you to remember a figure. It also survives the next rewording, because it tests the shape of the claim rather than its vocabulary.

One more thing worth noticing: a page that names the Secretary has told you something about its own limits, not just about the statute. Limb (bb) has no published contents that we have found. A page that names it is a page that has to admit the second half of the cap is currently unspecified. A page that omits it gets to sound complete. The wrong version is the more confident-sounding one, which is most of why it travels.

While we were in the statute, we also checked the one place a Texas rule has to appear

A new issue of the Texas Register published this morning — Volume 51, Number 44. We have been waiting a week for it, and a weekly publication is only worth reading on the day it opens.

Its Adopted Rules carry the Department of State Health Services on health planning and resource development sections, and the Health and Human Services Commission on two licensing matters. Its In Addition section carries the health department once, on radioactive-materials licensing. The issue contains no emergency, withdrawn, transferred or expired rules section at all.

No consumable-hemp item appears in it. Not in proposed rules, not in adopted rules, not in the rule reviews, not in the notices.

The scope of that is exactly one issue of one publication on one date. It is not a finding that nothing changed, it is not an announcement of absence, and we are not going to run it backwards into a claim that nothing is coming. What it is: the channel through which a Texas administrative rule has to be published was open this morning and had nothing hemp-shaped in it.

What this does not say

It does not resolve whether November 12 or December 11 governs the container threshold. That question has been open in this record since September and we decline it in both directions, as we have every time.

It does not say which compounds fall inside limb (aa) or limb (bb). Both of the answers we read this morning name delta-8 and delta-10 as counted. That is chemistry and statutory construction, we have not verified it, and naming compounds is exactly the step that produced the error we are describing.

It does not say anything about enforcement posture, by any agency, in either direction, and it does not say that any product may or may not be offered for sale.

It makes no claim about what any court will do. A temporary-injunction hearing in a Texas suit against the state health department was reported in September as set for today; the only account of that schedule is a party's own, we cannot read the docket, and we have nothing to add in either direction.

It names nobody.

The shape of the lesson, for anything you verify

We built a check out of the most reliable signal available, and the signal degraded because it became well known. That is not a special property of hemp regulation. Any tell that works gets adopted by the thing it was distinguishing, and the better known a correction becomes, the sooner its vocabulary shows up attached to the claim it was correcting.

So the check that lasts is the one aimed at structure. Not does this page use the right word but does this page have the right number of parts.

Our longer write-up of the provision itself, including the correction we made to our own wording of it, is at gethempdash.com/learn/rule-watch-container-level-thc-cap. The method behind the two phrasings is at gethempdash.com/learn/ask-it-twice.