The sequence is worth laying out, because the ending is not the one the beginning implies.
- 15 April 2025 — the Secretary of Commerce is directed to investigate imports of processed critical minerals and their derivative products under section 232 of the Trade Expansion Act of 1962.
- 24 October 2025 — Commerce reports that those imports threaten to impair the national security of the United States.
- 7 November 2025 — the covered list is widened to 61 items, adding boron, copper, lead, metallurgical coal, phosphate, potash, rhenium, silicon, silver and uranium.
- 14 January 2026 — Proclamation 11001, Adjusting Imports of Processed Critical Minerals and Their Derivative Products into the United States, imposes no tariffs and no quotas. It determines instead that it is “necessary and appropriate to enter into negotiations with trading partners to adjust the imports of PCMDPs,” and instructs that in negotiating, the Secretary and the Trade Representative “should consider price floors for trade in critical minerals.” A progress update is due within 180 days — by 13 July 2026 — and the proclamation reserves “alternative remedies in the future, including minimum import prices.”
- 4 February 2026 — the Trade Representative announces critical minerals co-operation with the European Commission and Japan, describing action plans that “will lay the groundwork for a binding plurilateral agreement on trade in critical minerals with like-minded partners.”
The scope of “derivative products” is unusually wide: not just semi-finished goods such as anodes and cathodes, but finished ones — motors, batteries, radar systems, wind turbines, optical devices. A tariff applied across that range would have reached a very large share of what the United States imports.
Price floors are a different kind of tool
The negotiating instruction is the substance, and it is worth reading precisely: the proclamation does not order price floors, it tells the negotiators to consider them. The arrangements discussed with the European Commission and Japan have since been described in terms of border-adjusted price floors.
A tariff raises the cost of an import. A price floor sets the level below which a transaction will not clear, which is a different promise: it protects a producer from the specific event that has repeatedly killed American processing capacity, which is a price that falls faster than a plant can cut its costs.
This site’s central historical claim is exactly that. Sixteen American copper smelters became two, and the sharpest part of that collapse came in a five-year stretch when the price halved. No shortage of ore caused it. The plants were closed because at that price they lost money, and once a smelter is cold it does not reopen.
There is already a worked example of the mechanism, at a single company rather than a border. Under the July 2025 agreement between the Department of Defense and MP Materials, the department set a price floor of $110 per kilogram for NdPr for ten years, against a market price around $60 at the time, alongside an equity investment and a ten-year offtake. Whatever one thinks of the deal, it establishes that the US government is now willing to underwrite a price rather than merely tax a competitor.
What is not yet on the record
The proclamation set no deadline for concluding anything. What it set was a reporting date: a progress update due within 180 days, by 13 July 2026. We have not been able to confirm from primary sources what that update said, or whether any binding agreement has been signed since. Several secondary accounts describe the 180 days as a negotiating window that expires; the proclamation itself does not say that. This article stops where the public record stops, and will be updated when there is something citable to update it with.
Two things worth watching if you sell into or buy from this market: a price floor is a floor for importers too, so it raises input costs for anyone downstream of the mineral; and a floor only helps a producer who exists. It is a demand-side instrument, and the capacity it is meant to protect still has to be built.
