Executive summary (20-second highlights):

The United States spent a year building a Copper tariff and then stopped short of deciding on it, for a reason that has nothing to do with China and everything to do with what voters pay for wiring.
Brazil's producers said out loud this week what the whole ex-China build-out has been avoiding: financing lowers the cost of building a refinery, and only a floor decides whether it runs afterwards.
The largest single cheque written into a critical minerals project this week came from a state tax office, not a federal agency, and it pays nothing until the plant is already operating.
Two rules take effect on January 1st, 2027. The market is watching the wrong one. The one that matters added three words.
The first public money CMJ can find aimed at two of the seven elements China controls arrived on Monday. It was US$4.6M.
Europe now has a qualified magnet line running for a Tier 1 automotive customer, and no European source for the two elements that line needs most.

Illustration of Freeport-McMoran Center

Affordability is the new constraint

For two years the working assumption has been that Western instruments are limited by money, by permitting time, and by China's willingness to retaliate. Put simply: budget, clock, counterparty.

What this week brings to the table is a fourth one, and one that binds very hard.

It has been reported that the White House has not finalised its position on refined Copper tariffs, and the reason is affordability: officials are weighing higher manufacturing costs and consumer prices against the case for encouraging domestic production, with the midterm elections approaching.

Commerce Secretary Howard Lutnick was tasked with delivering a recommendation by June 30th, 2026 (which was never disclosed). The proposed tariffs schedule, unchanged on paper, is 15% from January 1st, 2027, rising to 30% in 2028.

The market had been trading that schedule all week. Copper set records on the London Metal Exchange (LME) in four consecutive sessions, and COMEX touched a record US$6.894/lb, which is ~US$15,200/tonne at the house conversion. Then the story ran.

https://www.lme.com/metals/non-ferrous/lme-copper#Price+graphs

Hold the mechanism still, because the direction of the move is not the most interesting part of it.

Nothing happened to Copper this week. No mine closed, no smelter tripped, no cargo was seized. Nothing.

International Copper Study Group figures even put world mine production down 1.1% in the first half of 2026, with Chile, Indonesia and the Democratic Republic of the Congo all falling.

And Morgan Stanley is projecting 2026 to be the first year with an annual production decline since 2017.

In short: the physical market seems to be getting tighter, while the price fell.

What moved and affected the market is the probability that a rule gets written.

We named this shape in CW33 as 'buying the date': a position expressed against an administrative decision rather than against a supply event, and in that case, a spread building up ahead of an expiry date.

This week is the same instrument unwinding, and it unwound on a reported deliberation (as per Reuters) rather than on a decision. And such market volatility (~4%), without ‘real economy’ principles, seems more like speculation on a meeting than based on the commodity’s economic principles.

The spread between the two venues is where that is probably visible:

COMEX has traded above the LME all year because a US buyer facing a future duty will pay more today for metal already inside the customs border.
Set the COMEX record against the range of reported LME peaks, and the gap is somewhere around US$300/tonne, though we cannot state a matched-timestamp spread without the exchange series and does not.
A collapse in that gap is the clean read that the duty has been abandoned.
A gap that holds while LME stock keeps falling is the other read entirely, and we have a standing falsifier on exactly that from CW34.

That is uncomfortable, but familiar. The finding is why the decision stalled, and that part generalises.

A price floor, a border adjustment and a stockpile are the three instruments we have tracked as capable of setting a clearing price outside China. All three work the same way: they put a number under the market, and somebody pays the difference.

In a floor, the sponsoring treasury pays it (direct and simple).
In a stockpile, the treasury pays it and warehouses the outcome/result.
In a border measure, the domestic buyer pays it, and then the domestic consumer does too.

The third is the only one that needs no appropriation, which is why it has been the preferred instrument since 2025. It is also the only one where the cost shows up on a shelf, and hidden inside a broader inflation basket.

In contrast, Freeport-McMoRan's CEO, Kathleen Quirk, set out their US growth path that needs no border measure:

Grasberg back to 65% of capacity in the second half of 2026, 80% by the middle of 2027 and approaching 100% by the end of 2027.
Leaching of historic stockpiles rising from about 200 Mlb to 800 Mlb a year against an estimated 40 bn lb of contained metal already mined and sitting on the surface, most of it in the United States.
Bagdad expansion that could lift US output about 60% over three to four years.

And this came with an ask: inclusion of Copper in the federal advanced manufacturing production credit, Section 45X, which the company put at about US$500M a year, or roughly a 10% production cost benefit.

Now compare it with the 15% tariff on refined Copper:

15% tariff ultimately results in a price increase for every wire in the country (again, inflation)
While a production credit of US$500M a year to one Copper producer raises/increases nothing for a household (meaning it easily survives an election period)

Which gives the critical minerals sector a test it did not have last week, and it sorts every instrument CMJ tracks into two piles.