Our Amicus Brief in the Section 122 Tariff Case

Key Takeaways

• Cato Institute joins Liberty Justice Center in filing amicus brief
• Brief argues Section 122 tariffs exceed statutory 150‑day limit
• Major questions doctrine demands clear congressional authorization
• Nondelegation claim says tariffs are core legislative power
• Outcome could curb future executive trade actions

Pulse Analysis

The Section 122 tariffs, announced in early 2026, represent the latest attempt by the executive branch to sidestep congressional authority over trade. By levying a 10 percent duty—potentially rising to 15 percent—on imports from virtually all trading partners, the administration seeks to address a purported balance‑of‑payments problem that many economists argue does not exist. This move follows the Supreme Court’s recent invalidation of similar tariffs imposed under the International Emergency Economic Powers Act, highlighting a pattern of executive overreach in trade matters.

In its amicus brief, the Cato Institute and Reason author lay out three legal pillars to challenge the tariffs. First, they assert that Section 122 of the Trade Act permits tariffs only for up to 150 days in response to a genuine, severe payments crisis—conditions absent in today’s flexible exchange‑rate system. Second, they invoke the major questions doctrine, insisting that Congress must speak explicitly when delegating decisions of vast economic significance, which it did not do for these sweeping duties. Third, the brief cites the nondelegation doctrine, emphasizing that the power to tax and impose tariffs resides exclusively with Congress, and the president cannot unilaterally expand that authority.

The broader implications extend beyond the immediate case. A ruling that curtails Section 122 tariffs would reaffirm legislative primacy in trade policy, providing certainty for businesses that rely on predictable import costs. It would also set a precedent limiting future administrations from using emergency statutes to impose broad economic measures without clear congressional backing. For investors, policymakers, and multinational firms, the outcome will signal how far the courts are willing to check executive power in the realm of international commerce, shaping the strategic landscape for years to come.