Legal Sidebari

Legal Consequences of Rescheduling
Marijuana
January 16, 2024
On August 29, 2023, the Department of Health and Human Services (HHS) reportedly recommended to
the Drug Enforcement Administration (DEA) that marijuana be rescheduled from Schedule I to Schedule
III under the Controlled Substances Act (CSA). DEA is currently reviewing HHS’s recommendation.
When considering whether to schedule or reschedule a controlled substance, DEA is bound by HHS’s
recommendations on scientific and medical matters. However, DEA has also stated that it has “final
authority to schedule, reschedule, or deschedule a drug under the Controlled Substances Act.”
A previous CRS Insight outlined policy considerations related to rescheduling marijuana. This Legal
Sidebar provides additional information on the legal consequences of the possible move of marijuana
from Schedule I to Schedule III.
Current Legal Status of Cannabis Under the CSA
Cannabis and its derivatives generally fall within one of two categories under federal law: marijuana or
hemp. Unless an exception applies, the CSA classifies the cannabis plant and its derivatives as marijuana
(some provisions of the statute use an alternative spelling, “marihuana”). The CSA definition of
marijuana excludes (1) products that meet the legal definition of hemp and (2) the mature stalks of the
cannabis plant; the sterilized seeds of the plant; and fibers, oils, and other products made from the stalks
and seeds. Marijuana is a Schedule I controlled substance under the CSA.
Federal law defines hemp as the cannabis plant or any part of that plant with a delta-9
tetrahydrocannabinol (THC) concentration of no more than 0.3%. The non-psychoactive compound
cannabidiol (CBD) falls within the legal definition of hemp. Hemp is not a controlled substance under the
CSA.
Substances become subject to the CSA through placement in one of five lists, known as Schedules I
through V. Congress placed marijuana in Schedule I in 1970 when it enacted the CSA. A lower schedule
number carries greater restrictions under the CSA, with controlled substances in Schedule I subject to the
most stringent controls. Schedule I controlled substances have no currently accepted medical use. It is
illegal to produce, dispense, or possess such substances except in the context of federally approved
scientific studies, subject to CSA regulatory requirements designed to prevent abuse and diversion.
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Unauthorized activities involving Schedule I controlled substances are federal crimes that may give rise to
large fines and significant jail time. DEA is required to set annual production quotas for Schedule I
controlled substances manufactured for use in approved research.
In addition to the general regulatory framework that applies due to marijuana’s Schedule I status, some
provisions of the CSA apply specifically to marijuana. For instance, 21 U.S.C. § 841 imposes mandatory
minimum prison sentences for persons convicted of criminal CSA violations involving set quantities of
specific controlled substances, including marijuana. In addition, 21 U.S.C. § 823 creates special
registration requirements for those who manufacture marijuana for research purposes.
In sharp contrast to the stringent federal control of marijuana, in recent decades nearly all the states have
changed their laws to permit the use of marijuana (or other cannabis products) for medical purposes. In
addition, twenty-four states and the District of Columbia have passed laws removing certain state criminal
prohibitions on recreational marijuana use by adults. As the Supreme Court has recognized, states cannot
actually legalize marijuana because the states cannot change federal law, and the Constitution’s
Supremacy Clause dictates that federal law takes precedence over conflicting state laws. So long as
marijuana is a Schedule I controlled substance under the CSA, all unauthorized activities involving
marijuana are federal crimes anywhere in the United States, including in states that have purported to
legalize medical or recreational marijuana.
Nonetheless, Congress has granted the states some leeway to allow the distribution and use of medical
marijuana. In each budget cycle since FY2014, Congress has passed an appropriations rider barring the
Department of Justice (DOJ) from using taxpayer funds to prevent states from “implementing their own
laws that authorize the use, distribution, possession, or cultivation of medical marijuana.” Courts have
interpreted the appropriations rider to prohibit federal prosecution of state-legal activities involving
medical marijuana. However, it poses no bar to federal prosecution of activities involving recreational
marijuana. Moreover, the rider does not remove criminal liability; it merely limits enforcement of the
CSA in certain circumstances while the rider remains in effect. While official DOJ policy has varied
somewhat across Administrations, recent presidential Administrations have not prioritized prosecution of
state-legal activities involving marijuana.
Even absent criminal prosecution or conviction, individuals and organizations engaged in marijuana-
related activities in violation of the CSA—including participants in the state-legal marijuana industry—
may face collateral consequences arising from the federal prohibition of marijuana. Other federal laws
impose legal consequences based on criminal activity, including violations of the CSA. For example, a
financial institution handling income from a marijuana business may violate federal anti-money
laundering laws. Likewise, Section 280E of the Internal Revenue Code renders marijuana businesses
ineligible for certain federal tax deductions. The presence of income from a marijuana-related business
may also prevent a bankruptcy court from confirming a bankruptcy plan (though courts have split on the
issue). For individuals, participation in the state-legal marijuana industry may have adverse immigration
consequences. Violations of the CSA may also affect individuals’ ability to receive certain federal
government benefits. In addition, federal law prohibits gun ownership and possession by any person who
is an “unlawful user of or addicted to any controlled substance,” with no exception for users of state-legal
medical marijuana.
Legal Consequences If Marijuana Moved to Schedule III
Moving marijuana from Schedule I to Schedule III, without other legal changes, would not bring the
state-legal medical or recreational marijuana industry into compliance with federal controlled substances
law. With respect to medical marijuana, a key difference between placement in Schedule I and Schedule
III is that substances in Schedule III have an accepted medical use and may lawfully be dispensed by
prescription, while Substances in Schedule I cannot. However, prescription drugs must be approved by

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the Food and Drug Administration (FDA). Although FDA has approved some drugs derived from or
related to cannabis, marijuana itself is not an FDA-approved drug. Moreover, if one or more marijuana
products obtained FDA approval, manufacturers and distributors would need to register with DEA and
comply with regulatory requirements that apply to Schedule III substances in order to handle those
products. Users of medical marijuana would need to obtain valid prescriptions for the substance from
medical providers, subject to federal legal requirements that differ from existing state regulatory
requirements for medical marijuana.
Rescheduling marijuana would not affect the medical marijuana appropriations rider. Thus, so long as the
current rider remains in effect, participants in the state-legal medical marijuana industry who comply with
state law would be shielded from federal prosecution. If the rider were to lapse or be repealed, these
persons would again be subject to prosecution at the discretion of DOJ.
With respect to the manufacture, distribution, and possession of recreational marijuana, if marijuana were
moved to Schedule III, such activities would remain illegal under federal law and potentially subject to
federal prosecution regardless of their status under state law.
Some criminal penalties for CSA violations depend on the schedule in which a substance is classified. If
marijuana were moved to Schedule III, applicable penalties for some offenses would be reduced.
However, CSA penalties that apply to activities involving marijuana specifically, such as the quantity-
based mandatory minimum sentences discussed above, would not change as a result of rescheduling. DEA
is not required to set annual production quotas for Schedule III controlled substances.
The prohibition on business deductions in Section 280E of the Internal Revenue Code applies to any trade
or business that “consists of trafficking in controlled substances (within the meaning of schedule I and II
of the Controlled Substances Act) which is prohibited by Federal law or the law of any State in which
such trade or business is conducted.” Because the provision applies only to activities involving substances
in Schedule I or II, moving marijuana from Schedule I to Schedule III would allow marijuana businesses
to deduct business expenses on federal tax filings. Other collateral legal consequences would continue to
attach to unauthorized marijuana-related activities.
Considerations for Congress
Either Congress or the executive branch has the authority to change the status of marijuana under the
CSA. Congress can change the status of a controlled substance through legislation, while the CSA
empowers DEA to make scheduling decisions through the notice-and-comment rulemaking process. As
noted above, DEA is reportedly considering whether to reschedule marijuana. A proposal from the 118th
Congress would provide for congressional review of DEA rescheduling decisions related to marijuana.
If Congress wishes to change the legal status of marijuana, it has broad authority to do so before or after
DEA makes any scheduling decision. Several proposals from the 118th Congress would remove
marijuana from control under the CSA or move the substance to a less restrictive schedule. If Congress
moved marijuana to Schedule III by legislation, it could simultaneously consider whether to change some
of the legal consequences of Schedule III status described above. Congress could also legislate to move
marijuana to another CSA schedule, which would subject it to controls more or less stringent than those
that apply to Schedule III controlled substances.
Rescheduling or descheduling marijuana under the CSA could raise additional legal questions. For
instance, FDA regulates certain cannabis products under the Federal Food, Drug, and Cosmetic Act, so
Congress might also consider whether to alter that regulatory regime or create some alternative regulatory
framework. In addition, relaxing the CSA’s restrictions on marijuana could implicate the United States’
international treaty obligations.

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While most recent proposals would relax federal regulation of marijuana, Congress could also seek to
impose more stringent controls. One proposal from the 118th Congress would withhold certain federal
funds from states in which the purchase or public possession of marijuana for recreational purposes is
lawful. A proposal from the 117th Congress would have prohibited the use of benefits under the
Temporary Assistance for Needy Families block grant at any store that offers marijuana for sale. Other
proposals from the 117th Congress sought to address the issues of workplace impairment or driving under
the influence of marijuana and other substances.

Author Information

Joanna R. Lampe

Legislative Attorney




Disclaimer
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to congressional committees and Members of Congress. It operates solely at the behest of and under the direction of
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information that has been provided by CRS to Members of Congress in connection with CRS’s institutional role.
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