NEW ORLEANS — A massive wave of copper flowing into the United States is creating an unexpected bottleneck in one of America’s most important metals hubs, with New Orleans warehouses and terminals coming under increasing pressure as traders race to position supplies ahead of potential U.S. import tariffs.
At the center of the latest surge is the Nord Norfolk, a Liberian-flagged bulk carrier carrying roughly $500 million worth of African copper toward New Orleans. According to analytics firm Kpler, the cargo represents the highest market value it has recorded for a single commodity shipment.
But the ship is only one part of a much larger rush.
New Orleans faces a copper traffic jam
New Orleans has become a crucial gateway for metals entering the United States and an important hub for warehouses approved to handle copper deliverable against COMEX contracts.
People familiar with the situation say storage capacity in the area is already close to being exhausted. The pressure could intensify further, with about 100,000 metric tons of additional copper from Africa and South America expected to arrive during September and October.
The congestion is not simply a matter of ships waiting at the dock.
Anton Posner, chief executive of logistics company Mercury Resources, said marine terminals around New Orleans are experiencing serious congestion, resulting in delays when copper and other metals are transferred to trucks and railcars. His company has responded by using barges on the Mississippi River to move some of the material.
That development illustrates the unusual problem facing the U.S. copper market: there is plenty of metal arriving, but getting it unloaded, stored and moved efficiently is becoming increasingly difficult.
Why is so much copper heading to America?
The answer lies largely in the enormous price difference that developed between U.S. and international copper markets as traders anticipated possible U.S. tariffs.
For months, traders and producers have been moving copper into the United States in an effort to secure supplies before any potential duties take effect.
Reuters reported in August that U.S. COMEX copper inventories had climbed for 46 consecutive days, reaching about 675,185 metric tons at the time. The buildup occurred even though analysts did not see a straightforward global shortage of copper.
Instead, the tariff threat has effectively changed where copper is stored.
Metal that might otherwise have remained in international warehouses has increasingly been redirected toward the United States, where prices have offered an incentive for traders to sell or store it.
The result is an unusual market imbalance: U.S. warehouses are filling while readily available inventories elsewhere have become tighter.
U.S. copper imports have surged
The scale of the movement is significant.
Reuters reported that the United States imported almost 885,000 metric tons of refined copper cathodes during the first half of 2026, about 3% more than in the same period a year earlier and more than twice the volume imported during the first half of 2024.
U.S. copper imports also showed a dramatic increase from the Democratic Republic of Congo.
According to Reuters, American buyers imported a record 53,290 metric tons of Congolese copper cathodes in July, helping push total U.S. copper imports above 220,000 tons for the month.
The Congo accounted for nearly 24% of U.S. copper imports in July.
That surge is notable because Congolese copper brands are not currently deliverable against COMEX contracts. Instead, some American industrial users are buying the material directly because it can be cheaper than COMEX-approved copper.
Warehouses are expanding—but demand is moving faster
The copper-storage crunch has prompted warehouse operators to seek additional capacity.
CME Group has approved increases in storage capacity at facilities in New Orleans. One September approval raised the authorized copper storage capacity at a New Orleans facility from 63,934 short tons to 70,000 short tons.
CME has also approved additional warehouse capacity in other U.S. locations as the volume of copper moving into the country has grown.
Earlier reporting indicated that the exchange had approved dozens of additional warehouses and significantly increased potential copper storage capacity since the beginning of 2025.
But the latest New Orleans congestion shows that adding warehouse capacity does not necessarily solve the immediate logistical problem.
Copper still has to move through ports, terminals, trucks, railcars, barges and warehouses before it reaches manufacturers.
The tariff decision remains the market’s biggest wildcard
The underlying reason for the rush remains unresolved U.S. trade policy.
Reuters reported on September 10 that the White House had not made a final decision on tariffs for refined copper, with officials weighing the potential benefits of encouraging domestic mining and refining against the possibility that tariffs could increase costs for manufacturers.
The United States imports roughly half of its copper requirements and has only two operational copper smelters, according to Reuters.
That dependence makes the tariff question particularly important for industries that consume large amounts of copper, including electrical equipment, automobiles, construction and industrial manufacturing.
The administration had previously been considering a potential 15% tariff beginning in 2027, rising to 30% in 2028, although the final policy remained unresolved in the latest Reuters reporting.
The uncertainty itself has therefore become a market force.
Copper prices have already felt the impact
Copper prices reached record levels in September as traders reacted to the combination of tariff uncertainty, strong U.S. buying and concerns about future mine supply.
Reuters reported that three-month copper on the London Metal Exchange reached record territory earlier this month before retreating as doubts about U.S. tariff implementation grew.
On September 18, three-month LME copper was around $14,467.50 per metric ton, according to Reuters reporting, and was on track for a weekly gain of roughly 1.6%.
The price story is complicated, however.
The surge in U.S. inventories could eventually weigh on the U.S. premium if the metal remains available and tariffs do not materialize as expected. At the same time, removing large quantities of copper from international markets can tighten supply elsewhere.
In other words, the copper market is increasingly being divided by geography.
The real question: what happens when the copper arrives?
The New Orleans congestion may be the most visible sign yet of how dramatically U.S. trade expectations have reshaped the global copper market.
If the flow of imports continues, warehouses and transportation networks will face additional pressure.
If tariffs are eventually imposed, the copper already sitting inside the United States could become particularly valuable because it would already be positioned within the U.S. market.
But if tariffs are delayed, reduced or abandoned, the economic incentive that attracted so much copper into the country could weaken.
That leaves traders facing a difficult calculation.
The United States has accumulated an enormous stockpile of copper—but moving, storing and eventually consuming that metal could prove to be a very different challenge.
And with another 100,000 metric tons reportedly heading toward New Orleans in September and October, the next test may not be whether America can attract enough copper.
It may be whether its ports and warehouses can handle what is already on the way.
