Nvidia's China chips take a U.S. detour that costs 25%. Democrats call it an illegal export tax

Every Nvidia H200 chip licensed for sale in China this year has had to make a detour. The chips are made in Taiwan. Before they can go to a Chinese buyer, they must be shipped into the United States for a security test. When they land, they owe a 25% tariff. Then they leave again for China.

Two senior Democrats say that detour is a disguised tax on exports, which the Constitution bans. On Nov. 12, Senate Finance ranking member Ron Wyden and House Ways and Means ranking member Richard Neal opened an investigation into what their letter calls a "scheme to approve and tax exports" of Nvidia chips through "what appears to be an unconstitutional export tax system." They asked Commerce Secretary Howard Lutnick to preserve records on the tariff, on Nvidia's license applications and on the department's contacts with Nvidia and Jensen Huang.$$

The administration's legal position is that the charge is an import tariff, set under a national security law, on chips that enter the country. The fight matters beyond Nvidia. If a president can tax goods on their way out by routing them in first, the ban on export taxes could mean little in practice.

How the 25% charge works#

The arrangement took shape in three steps. On Dec. 8, 2025, President Trump said Nvidia could sell H200 chips to approved customers in China, with a 25% share going to the U.S. government. On Jan. 13, the Commerce Department's Bureau of Industry and Security moved H200-class licenses for China from a presumption of denial to case-by-case review. One condition was "independent, third-party testing in the United States."

The next day, Trump signed Proclamation 11002 under Section 232 of the Trade Expansion Act of 1962. It put "an immediate 25 percent ad valorem duty rate on the import of certain advanced computing chips." The duty applies only when the import "does not contribute to the buildout of the United States technology supply chain." Chips bound for U.S. data centers, research, startups and other domestic uses are exempt. No refund, known as drawback, is allowed when the goods leave again.

The law firm White & Case concluded that the technical limits in the order appear designed to cover the H200 and AMD's MI325X. That is a law firm's reading, not an official statement. But the pieces fit: the license rule requires the chips to enter the United States, and the tariff applies to chips that enter but are not meant to stay.

1. 1Made in TaiwanTSMC builds the chip for Nvidia
2. 2Imported to the U.S.required for a third-party security test
3. 3Tariff paid25% Section 232 duty, with no refund on export
4. 4License grantedCommerce reviews the Chinese buyer case by case
5. 5Exported to Chinaup to a cap tied to U.S. sales

Source: BIS, Jan. 13, 2026, Proclamation 11002, IAPS

How much money is at stake? The Institute for AI Policy and Strategy, a research group, estimated in January that the most the charge could raise is about $6.75 billion. That is roughly 0.13% of 2025 federal tax revenue. Actual sales have been far smaller. In August, Nvidia finance chief Colette Kress said H200 shipments to China were "less than 1% of our total data center revenue," according to the earnings call transcript.

It was not the first deal of its kind. In August 2025, Nvidia and AMD agreed to share 15% of their revenue from some China chip sales with the U.S. government to secure licenses, the Associated Press reported, as summarized by TechCrunch.

What the license conditions promise#

The tariff is only one part of the deal. The January rule also sets limits meant to protect national security, and those limits are where critics in both parties have focused.

Exports of a chip model to China cannot exceed 50% of that model's U.S. sales since launch. IAPS estimated that cap at about 900,000 H200-class chips, growing by roughly 150,000 a quarter. Buyers must screen their own customers. Nvidia must certify that China sales will not delay U.S. orders.

IAPS argued that much of this is hard to check. Commerce has no practical way to verify Nvidia's certifications, it wrote, and the H200 has no remote shut-off once it is in China. It also quoted a description of Commerce enforcement as relying on "Google searches and Microsoft Excel." Those are the views of one research group, but the record since then gives them weight. House Foreign Affairs Committee Democrats wrote on Nov. 9 that Commerce licensed sales to Chinese firms with reported links to blacklisted companies or China's military, including one, New Matrix, that shows little evidence of existing.

That debate shapes the tax fight. To the Democrats, the money and the weak checks are linked: a deal that pays the Treasury looks less like a security policy. To the administration, the fee and the conditions together let U.S. firms compete in China under watch, rather than ceding the market.

What the Constitution says#

The Export Clause is short. "No Tax or Duty shall be laid on Articles exported from any State," reads Article I, Section 9. The Supreme Court has read it broadly.

In United States v. IBM in 1996, the justices struck down a federal tax on insurance premiums for policies covering exported goods, even though the tax applied to all such policies alike. Two years later, in United States v. United States Shoe Corp., they struck down the Harbor Maintenance Tax as applied to exports. The government called it a fee for port services. The Court said it was a tax, because it was based on cargo value, and a real fee "must fairly match the exporters' use of port services and facilities."

The Democrats' argument builds on that line of cases. In their view, the government designed a route that forces export-bound chips through U.S. customs, then charges them a duty only because they are headed abroad. The tax, they say, falls on the export in substance, whatever its label.

The administration's case#

The administration frames the charge as an ordinary import tariff. Section 232 lets the president adjust imports that threaten national security after a Commerce investigation. The proclamation cites that authority, and Wyden and Neal's letter notes a Section 232 report sent to the president on Dec. 22, 2025.

On this reading, the duty is laid on a chip arriving from Taiwan, not on a chip leaving a U.S. state. The Export Clause protects "articles exported from any State," and a foreign-made chip passing through for testing arguably never became part of the U.S. economy in a way the clause protects. The proclamation's stated purpose is domestic. It says the tariff encourages U.S. chip production and reduces reliance on imported advanced chips.

Commerce has also defended the sales themselves. "Permitting the sale of the H200 to China under controlled conditions will strengthen the American technology ecosystem," Under Secretary Jeffrey Kessler said in January. The idea, which Nvidia has long pressed, is that U.S. chips in Chinese data centers keep Chinese developers tied to American technology, and the money stays with U.S. firms instead of Huawei.

No court has ruled on the question. Exporters normally challenge such charges by paying and suing for a refund. Nvidia, the party that pays, has not sued, and it may have little reason to challenge a deal that let it sell in China at all. That leaves Congress as the main venue.

Why the money question is now political#

The probe arrives as Nvidia faces a wider scandal. Huang resigned on Nov. 12 after admitting an affair, amid reports that U.S. intelligence linked him to Alice Huang, a former executive at Singapore chip buyer Megaspeed, whom officials suspect of working for Chinese intelligence. China denies it. Wyden and Neal's letter also cites reports that Nvidia and Huang directed at least $26 million toward Trump priorities, including the White House ballroom. The letter asks whether "political considerations are improperly influencing policy decisions." That is a question, not a finding, and the letter relies on press reports it does not independently verify.

The Democrats are the minority in both chambers. They can ask questions but cannot issue subpoenas. Their letter reminds Lutnick that destroying records relevant to a congressional inquiry can be a federal crime, citing laws with penalties of up to five and 20 years in prison. It sets no deadline for a reply.

Republicans have pressed Commerce from a different angle: enforcement. Lutnick is due before the Senate Banking Committee on Dec. 10, where senators of both parties plan to ask why Commerce never blacklisted Megaspeed. We cover that side in our story on Lutnick's coming testimony. Earlier 567politics reporting examined the resignation demand Lutnick faces and questions about his family's business interests.

What would settle it#

Three things could resolve the legal question. A court could rule if an importer pays and sues. Congress could write the charge into law or ban it, though a statute cannot override the Constitution either way. Or the administration could drop the U.S. testing step, which would end the detour and the duty with it.

For now, the arrangement stands. The open questions are factual as well as legal: how many H200s have paid the duty, how much it has raised and whether Commerce weighed the tariff when it granted licenses. Those are the records Wyden and Neal asked Lutnick to keep.

Differing perspectives

Is the 25% charge on Nvidia H200 chips routed through the United States to China a lawful import tariff or an unconstitutional export tax?

Each position is summarized as its supporters make it, with equal weight and in alphabetical order. A summary is not an endorsement; the evidence for each is weighed in the story above.

• A lawful Section 232 import tariff

  Who holds it: President Trump and the Commerce Department, through Proclamation 11002 and the H200 licensing policy

  The administration treats the charge as a duty on certain advanced chips imported into the United States, set under Section 232 national security authority after a Commerce investigation. The proclamation says it applies only to imports that do not help build the U.S. technology supply chain, and exempts chips for U.S. data centers, research and other domestic uses. Commerce argues that controlled H200 sales, with testing and buyer screening, strengthen the American technology ecosystem rather than ceding China's market to rivals.

  In their words: Proclamation 11002, Executive Office of the President ↗

• An export tax the Constitution bars

  Who holds it: Sen. Ron Wyden and Rep. Richard Neal, the top Democrats on the Senate Finance and House Ways and Means committees

  Wyden and Neal argue that the administration built a route that forces China-bound chips through U.S. customs so it can collect 25% on sales abroad. They say this amounts to a tax on exports, which Article I forbids, whatever its label. They link the arrangement to approvals of sales to Chinese firms with reported military ties and to Nvidia's spending on presidential priorities, and they have opened an investigation and asked Commerce to preserve its records.

  In their words: Sen. Ron Wyden and Rep. Richard Neal ↗

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