No. 7 – Chevron’s Collapse and Cannabis Regulation: Judicial Review After Loper Bright

Chevron’s Collapse and Cannabis Regulation: Judicial Review After Loper Bright

By Jason Karimi | WeedPress Policy Series No. 7
February 2026

The prior essay examined how the Major Questions Doctrine shapes judicial scrutiny when agencies assert power over issues of vast economic or political significance.

But another doctrinal shift may prove even more consequential for cannabis reform: the collapse of Chevron deference.

In Loper Bright Enterprises v. Raimondo, 603 U.S. _ (2024), the Supreme Court formally overruled Chevron U.S.A. Inc. v. Natural Resources Defense Council, 467 U.S. 837 (1984). The decision fundamentally altered how courts review agency interpretations of federal statutes.

For cannabis policy — and particularly for interpretations of the Controlled Substances Act (CSA) — the implications are significant.

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I. What Chevron Did

For forty years, Chevron instructed courts to defer to reasonable agency interpretations of ambiguous statutes.

The framework was simple:

1. If Congress had spoken clearly, courts enforced the statute as written.
2. If the statute was ambiguous, courts deferred to any reasonable agency interpretation.

Under that regime, agencies like the DEA possessed interpretive space. When statutory language was open-ended or structurally flexible, agency interpretations often prevailed so long as they were not arbitrary.

For cannabis regulation, this meant that:

• Interpretations of scheduling authority,
• Interpretations of registration mechanics under § 822,
• Interpretations of regulatory exception mechanisms,

were often evaluated with deference in mind.

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II. What Loper Bright Changed

In Loper Bright, the Court rejected Chevron’s deferential framework, holding that the Administrative Procedure Act requires courts to exercise independent judgment in interpreting statutes.

The Court stated plainly:

“Courts must exercise their independent judgment in deciding whether an agency has acted within its statutory authority.” Loper Bright Enters. v. Raimondo, 603 U.S. _, slip op. at 14 (2024).

“The Administrative Procedure Act requires courts to decide legal questions by applying their own judgment. That mandate does not permit courts to defer to an agency interpretation of the law simply because a statute is ambiguous.” Loper Bright Enters. v. Raimondo, 603 U.S. _, slip op. at 16–17 (2024).

Statutory ambiguity no longer automatically triggers deference. Instead:

• Courts interpret statutes de novo.
• Agency interpretations may be considered persuasive.
• But they are not controlling merely because ambiguity exists.

This change does not eliminate agency authority. It changes who has the final word on statutory meaning.

For the CSA, that is no small shift.

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III. Implications for § 822(d)

Section 822(d) authorizes the Attorney General, by regulation, to waive certain registration requirements consistent with public health and safety.

As discussed in Policy Series No. 5, the scope of that authority is an interpretive question.

Post Loper Bright, that interpretive question will not be resolved through automatic deference to the DEA’s reading of the statute.

If the agency asserts that § 822(d) permits:

• Narrow procedural accommodations, courts will independently assess the statutory text.
• Broader categorical exemptions, courts will independently assess whether that reading is supported by structure and context.
• Transformative regulatory changes, courts will evaluate whether the statutory language plausibly supports that scope.

In short: the judiciary now speaks first on statutory meaning.

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IV. Interaction with the Major Questions Doctrine

The collapse of Chevron does not replace the Major Questions Doctrine. It complements it.

Where Major Questions applies, courts require clear congressional authorization for decisions of vast economic and political significance.

Where ambiguity exists but the issue is not deemed “major,” courts now interpret statutory text independently rather than deferring reflexively.

Together, these doctrines mean:

• Scale increases scrutiny.
• Ambiguity no longer guarantees agency latitude.

For cannabis reform efforts pursued through administrative mechanisms, this dual shift matters.

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V. Practical Consequences for DEA Rulemaking

If the DEA undertakes significant rulemaking related to:

• Rescheduling,
• Registration waivers,
• Categorical exemptions,
• Enforcement reinterpretations,

courts reviewing those rules will:

1. Interpret the CSA independently.
2. Evaluate whether the agency’s interpretation aligns with statutory structure.
3. Apply arbitrary-and-capricious review under the APA.
4. Potentially consider Major Questions concerns if scale warrants.

The loss of Chevron does not render reform impossible. It narrows the margin for expansive interpretation unsupported by clear statutory grounding.

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VI. Federalism Implications

Cannabis regulation already exists within tension between federal prohibition and state-level legalization regimes.

Under Chevron, agencies sometimes occupied interpretive space in managing that tension.

Post-Loper Bright, federal courts — not agencies — will increasingly define the meaning of statutory boundaries.

That shift enhances judicial control over:

• The permissible scope of registration waivers,
• The interpretation of enforcement authority,
• The boundaries of regulatory discretion.

In a domain marked by political controversy and economic consequence, that judicial centrality matters.

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VII. What This Does — and Does Not — Mean

The overruling of Chevron does not:

• Eliminate delegated authority within the CSA.
• Prevent agencies from promulgating regulations.
• Invalidate existing regulatory frameworks automatically.

What it does mean is this:

Statutory interpretation now rests squarely with the judiciary.

Agency readings must persuade courts on textual, structural, and contextual grounds — not merely survive reasonableness review.

For cannabis policy pursued through administrative interpretation rather than congressional amendment, that distinction is consequential.

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VIII. Why This Matters for Reform Strategy

Public discourse often focuses on whether the executive branch “has authority” to act.

After Loper Bright, the more precise question is:

Will courts agree with the agency’s interpretation of that authority?

That question depends on:

• The clarity of statutory text,
• The coherence of structural argument,
• The consistency of historical practice,
• The scale of regulatory impact.

The era of automatic deference is over.

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Conclusion

The Controlled Substances Act contains delegated authority. It also operates within a judicial system that now interprets statutory ambiguity without Chevron’s presumption of agency deference.

When combined with the Major Questions Doctrine, the collapse of Chevron significantly reshapes the litigation environment surrounding cannabis reform.

Delegation remains real.
Judicial independence is stronger.
Scale magnifies scrutiny.

After Loper Bright, agencies no longer receive interpretive deference as a default matter. Statutory meaning now turns on judicial judgment.

WeedPress Policy Series 

No. 1 — Legal Memorandum: Common Misconceptions in Cannabis Activism Regarding Federal Drug Law (January 25, 2026)

No. 2 — The Path to a Religious Cannabis Exemption: How Medical Cannabis Systems Change the RFRA Equation (January 27, 2026)

No. 3 — Structural Contradictions and Prospective Litigation Risk in Post-Rescheduling Cannabis Policy (February 6, 2026)

No. 4 — The Controlled Substances Act Is Not a Blunt Instrument — It Is an Architecture of Exceptions (February 13, 2026)

No. 5 — The Limits of § 822(d): What It Does — and Does Not — Authorize (February 13, 2026)

No. 6 — The Major Questions Doctrine and Cannabis Reform: Delegation, Scale, and Judicial Review (February 14, 2026)

No. 7 — Chevron’s Collapse and Cannabis Regulation: Judicial Review After Loper Bright (February 17, 2026)

No. 8 — Administrative Procedure Act Vulnerabilities in DEA Rescheduling(February 20, 2026)

No. 9 – No. 9 — Dormant Commerce Clause, Circuit Splits, and Cannabis Federalism (February 23, 2026)

No. 10 — Federal Preemption After Rescheduling: Conflict, Obstacle, and Cannabis Federalism (February 27, 2026)

No. 11 — Equal Protection and Economic Protectionism in Cannabis Licensing: Classification, Remedial Design, and Constitutional Limits (March 3, 2026)

No. 12 — Federal Rescheduling as a Preemption Trigger: Rational Basis, Conflict, and State Schedule I Exposure(March 6, 2026).

No. 13 — Criminal Prosecution After Federal Medical Recognition: Motions Practice, Rational Basis, and Schedule I Litigation Exposure (March 10, 2026).

About Weedpress Policy Series

The Weedpress Policy Series publishes in-depth, citation-supported analysis of federal cannabis law, regulatory policy, and enforcement practices. The series is designed to provide lawmakers, attorneys, journalists, and stakeholders with legally grounded, non-activist, non-promotional analysis focused on statutory reality and institutional accountability.

Weedpress Policy Series emphasizes:

• Federal statutory interpretation
• Congressional intent and legislative history
• Treaty and international law implications
• Administrative law and agency authority
• Oversight of enforcement discretion and regulatory gaps