THCA and driving: DUI laws apply to impairment, not labels
A hemp label is not a defense to a drugged-driving charge. Which states set THC blood limits, which bar any trace, and why federal researchers say blood levels do not measure impairment.
Law
Can you fly with THCA flower?
TSA rewrote its marijuana page on April 27 and dropped its hemp sentence. What the agency says now, what federal and state law say, and what changes on Dec. 11. Checked Oct. 3.
Can THCA be shipped? USPS, carriers and the Dec. 11 change
The Postal Service mails hemp only on conditions, FedEx refuses hemp flower and UPS takes it only under contract. On Dec. 11 high-THCA flower stops being hemp and becomes nonmailable. Checked Oct. 3.
Will the hemp ban affect dispensaries?
The federal hemp change does not reach state-licensed marijuana stores. It does reach hemp and CBD shops that call themselves dispensaries. How to tell which is which.
What happens to THCA after December 11, 2026: a practical FAQ
The rule is settled; the follow-up questions are not. Flower already at home, orders still in the mail, the dispensary lane and which hemp products remain, as of Oct. 3.
Total THC vs. delta-9: how the law and the states count THC
Federal law tested crops on total THC for five years while judging products on delta-9 alone. How that split came about, which states closed it first, and what Dec. 11 changes.
The 0.4 mg per container limit, explained
From Dec. 11, 2026, a final hemp product may hold 0.4 mg of total THC per package, not per serving. The statute's words, the container question and the arithmetic.
Hemp Ban Tracker: THCA flower's federal deadline is Dec. 11, 2026
The federal total-THC rule reaches THCA flower on Dec. 11, 2026. Synthetics go first, on Nov. 12. Every date, the statute and what buyers should expect, checked Oct. 3.
Is THCA legal? Federal law, state law and the two lanes it is sold in
THCA flower is federal hemp until Dec. 11, 2026, and only where state law agrees. A 51-row table of the hemp-retail lane and the licensed lane, reviewed Oct. 3.