The United States has replaced blanket denial with a priced, conditional doorway for its most advanced artificial-intelligence chips. A final rule issued January 15, 2026 moved Nvidia’s H200 and AMD’s MI325X for China and Macau from “presumption of denial” to case-by-case review, paired with a 25 percent tariff, a cap limiting shipments to half of comparable United States sales, third-party testing and know-your-customer duties, according to reporting on the rule.
The architecture repays attention, because each condition answers a failure of the previous regime. Case-by-case licensing restores discretion where prohibition produced smuggling incentives and design-around chips. The 25 percent fee — imposed by presidential proclamation the day before the rule — converts the state’s security objection into a revenue share, on the argument that if the capability will flow, the Treasury should be paid for the risk. The 50 percent volume cap ties China supply to American supply, so the domestic build-out cannot be starved by its own export channel. Testing and customer diligence outsource verification to laboratories and exporters, who must now prove, not merely assert, where the silicon lands.
What remains banned defines the doorway’s width. The newest Blackwell generation sits outside it entirely, and the older catalogue — H100, A100 and their China-market derivatives among them — retains the presumption of denial, according to the rule’s reported structure. The doorway, in other words, admits exactly one generation: powerful enough to matter, superseded enough to defend. Analyst estimates cited in coverage expect the licensor’s China share of AI accelerators to fall from roughly 40 percent in 2025 toward single digits by the end of 2026 even with the doorway open, as domestic Chinese silicon takes the volume the licence rations.
Beijing, meanwhile, is reported to be managing its side of the door — regulators asking domestic champions about their plans for mid-range American parts, a reminder that dependence is a two-sided anxiety. Each capital wants the other’s market without the other’s leverage, and the rule is the current draft of that impossible contract.
Our Business desk reports the demand side: Chinese orders for the H200 said to dwarf opening inventory. Law this conditional will be tested by exactly that pressure — in licence queues, in testing capacity, in the fee’s collection, and in the first enforcement case that alleges the doorway was treated as a corridor. The rule’s authors have built a toll road and promised it is not a highway. The traffic, as usual, will deliver the verdict.
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