Big Sky Scientific v. Idaho State Police (2018–2019)

Last verified: April 2026

The January 2018 Seizure

In January 2018 — even before HB 126 — Idaho State Police troopers stopped a tractor-trailer carrying nearly 7,000 pounds of industrial hemp from Oregon to Colorado on I-84 near Boise. ISP seized the load and arrested the driver. The shipper, Big Sky Scientific LLC, sued in federal court arguing that the 2018 Farm Bill (then newly enacted) preempted Idaho's seizure and protected interstate transport of hemp.

The Ninth Circuit Ruling (2019)

The Ninth Circuit, in Big Sky Scientific LLC v. Idaho State Police (2019), declined to grant a preliminary injunction. The court held that the Farm Bill's interstate-transport protection applied only to hemp produced under a USDA-approved state plan, which did not yet exist anywhere because USDA had not issued implementing regulations.

Practical outcomes:

• The hemp was forfeited.
• The legal precedent gave Idaho a window to refuse interstate hemp transit.
• Subsequent USDA rulemaking and HB 126 narrowed that window.
• Today Idaho generally cannot block hemp moving through the state with proper paperwork — but it can still block any hemp that tests above 0.0% delta-9 from being possessed, sold, or consumed inside Idaho.

The Case's Legacy

• Federalism doctrine — The case is now cited in cannabis-and-hemp federalism scholarship as an example of state law operating in the gap before federal regulatory implementation.
• Hemp transport protocols — Hemp shippers now carefully document state-of-origin USDA compliance and route paperwork to minimize Idaho stops.
• Idaho's hemp HB 126 — The case directly motivated Idaho's 2021 hemp legislation, which had to address transit even while Idaho preserved the 0.0% consumer-product ceiling.
• K-9 doctrine pressure — The case sharpened defense-bar challenges to K-9 alerts that cannot distinguish hemp from marijuana.

What Big Sky Did NOT Establish

• It did not resolve the in-state possession-of-hemp question — that came with HB 126 in 2021.
• It did not establish that K-9 alerts for cannabis are insufficient probable cause in Idaho — that question remains live.
• It did not change Idaho's 0.0% THC consumer-product ceiling.

Modern Hemp Transport Through Idaho

Today, hemp shippers transporting through Idaho should:

• Carry full USDA-approved state-plan documentation from the state of origin.
• Carry the bill of lading, certificate of analysis, and chain-of-custody documentation.
• Route through Idaho on direct interstate corridors (I-84, I-90, US-95).
• Be prepared for ISP secondary-inspection if stopped.
• Consider routing alternatives that avoid Idaho if practical.