The Justice Department on May 12 urged the Supreme Court to decline hearing HMTX Industries v. U.S., a case that could define the boundaries of presidential tariff authority. The administration's filing reveals a sweeping interpretation of Section 301 of the 1974 Trade Act, suggesting the executive branch can expand tariffs without meaningful constraints. Critics argue this transforms a targeted trade statute into a blank check for perpetual trade wars.
The case stems from the first Trump administration's tariffs on China. After a Section 301 investigation found China's intellectual property theft and forced technology transfer burdened U.S. commerce, the administration imposed tariffs on $50 billion of Chinese imports. China retaliated, prompting two more rounds of tariffs covering an additional $320 billion in goods. American vinyl tile manufacturer HMTX challenged the later tariffs, claiming they had become "an unprecedented, unbounded and unlimited trade war."
The Court of International Trade upheld the tariffs, famously stating it would "not try to unscramble this egg." The Court of Appeals for the Federal Circuit affirmed, noting Section 301 grants "broad" but not unlimited discretion. Now, the Justice Department argues that "modifying" tariffs can include "larger changes or alterations" unless they are "radically transformative." Yet, the expansion from $50 billion to over $300 billion in covered goods suggests a transformation that critics say exceeds statutory intent.
The administration's logic hinges on conflating China's original unfair trade practices with its retaliatory tariffs. Section 301 authorizes responses to identified foreign practices burdening U.S. commerce, such as intellectual property theft. Retaliatory tariffs, however, are a sovereign response, not part of the original misconduct. The Justice Department argues that because China retaliated instead of abandoning its practices, the administration reasonably deemed the initial tariffs insufficient and escalated. This reasoning, critics warn, erases the statute's limiting principle.
The Court of Appeals upheld the later tariffs because they remained connected to the original investigation. But the Justice Department's current theory pushes beyond that, arguing courts should not scrutinize tariff magnitude since the statute lacks a numerical ceiling. If covering hundreds of billions of additional imports is a mere modification, the executive defines when a change becomes a new action requiring a new investigation. This case is no longer about Trump-era China tariffs; the administration openly acknowledges Section 301 is Plan B after the Supreme Court struck down using the International Emergency Economic Powers Act for sweeping tariffs.
The administration's brief suggests courts can sort out limits later if things go too far. But that approach risks allowing executive power to expand beyond recognition before judicial intervention. Congress designed Section 301 as a structured enforcement authority requiring a continuing nexus between tariff remedies and identified unfair practices. The Supreme Court should clarify this nexus still matters, preventing Section 301 from becoming a permanent delegation of open-ended trade war power. As Georgetown professor Marc L. Busch notes, the alternative is a statute Congress never authorized.
Related developments include ongoing debates over trade authority, such as the USMCA review deadline and congressional oversight of trade actions. The court's decision could reshape the balance of power in trade policy for years to come.
