A proposed federal crackdown on intoxicating hemp-derived products has triggered a political standoff between Kentucky’s two Republican senators, with Sen. Rand Paul blocking an agriculture spending bill that includes language championed by Senate Minority Leader Mitch McConnell.
Paul placed a hold on the 2025 Agriculture-FDA appropriations bill, objecting to a provision that would ban or tightly regulate synthetic cannabinoids like delta-8 THC. The measure, which passed the Senate Appropriations Committee, is intended to close what McConnell and others call the “hemp loophole” in federal law.
“This language had an unintended consequence that has allowed for intoxicating hemp-derived synthetic products to be made and sold across our country,” McConnell said, referencing a surge in unregulated, “high”-inducing products marketed to children. The 2018 Farm Bill, which McConnell helped pass, legalized hemp with less than 0.3% delta-9 THC by dry weight but did not anticipate lab-made compounds that can be chemically converted from hemp-derived CBD.
States struggle
In the absence of federal regulation, states have adopted a patchwork of conflicting policies, ranging from outright bans to full retail access. Many jurisdictions have scrambled to define the legal status of synthetic cannabinoids and set rules on THC isomers, labeling, and age restrictions. Enforcement has been inconsistent, leaving businesses uncertain and regulators overwhelmed.
Consumer safety advocates point to reports of mislabeled or contaminated products and marketing practices that mimic candy brands to target minors. Industry stakeholders warn that legitimate hemp businesses are caught in the crossfire, with unclear boundaries between acceptable CBD products and intoxicating synthetics.
CBD in crosshairs?
Under the Senate proposal, companies would have one year to end sales of any product containing a “quantifiable” amount of THC, including synthetic variants. But Paul argues the language is overly broad and could criminalize common CBD oils, which often contain trace THC. “I don’t know how you’d be able to sell CBD oil with that,” Paul said. He said the proposed spending bill would “completely destroy the American hemp industry.”
He has introduced a competing bill that would raise the legal THC threshold in hemp, rather than impose a blanket ban on isomers. Sen. Jeff Merkley (D-OR), a longtime hemp advocate, has also raised concerns about unintended consequences for the legal CBD market.
Federal oversight delayed
The Senate bill includes a requirement for a federal report, due within 180 days of enactment, to assess the impact of the proposed restrictions. The study would evaluate effects on the cannabinoid marketplace and recommend national standards for product labeling, safety testing, and packaging—areas that states have so far handled inconsistently.
While the House has already passed a similar measure, differences remain between the two versions. Still, the growing momentum reflects bipartisan concern that federal inaction has allowed the synthetic hemp market to spiral into what McConnell described as a “public health loophole.”