Two senior congressional Democrats have launched a formal inquiry into the Trump administration's approval of advanced Nvidia chip exports to China, challenging the legality of an unusual tariff arrangement and demanding that Commerce Secretary Howard Lutnick preserve all related records. The move marks a significant escalation in congressional scrutiny of US semiconductor export policy toward China.

The Arrangement Under Scrutiny

Representative Richard Neal, the top Democrat on the House Ways and Means Committee, and Senator Ron Wyden, his counterpart on the Senate Finance Committee, wrote to Lutnick raising questions about national security, export licensing, and the administration's use of tariff powers. According to their letter, Nvidia's Taiwan-manufactured H200 artificial intelligence chips would first enter the United States for a security review and export licence before being shipped on to China. A 25 per cent tariff would be collected at the point of US entry.

The lawmakers argued this structure effectively allowed the administration to collect a share of Nvidia's China sales through what they described as 'an export tax disguised as an import tariff.' In their letter, Neal and Wyden wrote: 'The Trump Administration's ostensible attempt to mask an unconstitutional export tax as a national security tariff action — benefitting both Nvidia and the Chinese government — raises serious concerns within our Committees' jurisdiction over matters relating to taxation and tariffs.' It should be noted that the constitutionality argument represents the lawmakers' interpretation, not a court ruling or formal legal finding.

Due Diligence and National Security Questions

Beyond the tariff structure, the Democrats questioned whether the Commerce Department had carried out adequate vetting of Chinese companies cleared to purchase the chips. Citing press reports, they said some approved buyers had links to the Chinese government or military. 'We have serious questions about whether the Commerce Department has been engaging in basic due diligence prior to issuing export licences for advanced AI chip sales to Chinese companies,' they wrote. They also raised the possibility that political considerations had improperly influenced export decisions, though these allegations are not findings of the inquiry.

What Records Are Being Sought

The lawmakers' preservation request covers records relating to the Commerce Department's semiconductor import investigation under Section 232 of the Trade Expansion Act of 1962 and the resulting tariffs. It also seeks records on Nvidia export-licence applications and departmental communications with or about Nvidia, its chief executive Jensen Huang, and their representatives. The letter explicitly reminded Lutnick of federal criminal prohibitions against destroying records relevant to congressional investigations. Notably, neither the preservation request nor the call for a briefing from House Foreign Affairs Committee Democrats — who posted on X that 'at a minimum, Congress needs to be briefed immediately' — has the legal force to halt chip exports or compel document production.

Nvidia Leadership Shift Adds Fresh Complexity

The inquiry lands against a backdrop of sudden corporate change at Nvidia. In a separate filing with the Securities and Exchange Commission (SEC) on Thursday, the company disclosed that its board had accepted Jensen Huang's resignation as chief executive on Wednesday, effective immediately. The timing deepens the complexity of the congressional probe, given that the records request specifically names Huang and his representatives.

The Legal Framework and What Comes Next

Section 232 grants the president authority to adjust imports following a national security investigation — a power traditionally invoked to restrict incoming goods, not to structure outbound exports. Neal and Wyden argued that deploying this authority to facilitate chip sales to China inverts its intended purpose. The inquiry sets up a broader confrontation over who controls US export policy on critical technologies, at a moment when AI chip access is central to the US-China technology rivalry. Congressional pressure, though not yet backed by subpoena power, could force the administration to publicly defend an arrangement it has not fully explained.