From port records to supply chain restructuring: the industrial logic behind the surge in US imports

Core Observation: Triple Pressures Behind the Million-TEU Milestone

In June 2026, the busiest container port in the United States—the Port of Los Angeles—set a historic record by handling 1.0027 million TEUs (twenty-foot equivalent units) in a single month, a 12% year-over-year increase. In the same month, the neighboring Port of Long Beach also recorded 779,300 TEUs, the third highest in its history. Nationwide, container imports surged 8.2% year-over-year.

This data does not simply signal a trade recovery; rather, it reflects a stress response by U.S. businesses under the triple pressures of new U.S. tariff policies, geopolitical conflict in the Middle East, and soaring fuel costs. To understand this phenomenon, it is necessary to look beyond port operations and delve into the paradigm shift unfolding in the U.S. supply chain.

Why This Is Happening: The Combined Impact of Tariff Expectations and War Shocks

Tariffs: The Sword of Damocles Hanging Over Businesses

The Trump administration planned to implement a new tariff strategy based on Section 301 in July 2026, aimed at reinstating the emergency tariffs previously struck down by the U.S. Supreme Court. Although the specific tariff rates and coverage had not yet been fully announced, businesses had already formed clear expectations: import costs would rise significantly.

To hedge against future tariff impacts, retailers, manufacturers, and even data center builders rushed to place orders ahead of time, front-loading import demand from the second half of the year or even next year into June. Port of Los Angeles Executive Director Seroka explicitly stated that shippers were "scrambling" to move cargo. This behavior mirrors the pre-tariff rush seen before the first round of U.S.-China trade friction tariffs in 2018, but this time the scale is larger and the scope broader.

The Middle East War: Surging Shipping Costs and Supply Chain Risks

The ongoing military conflict between the U.S. and Israel against Iran continues to disrupt global shipping. Tensions in the Strait of Hormuz and surrounding waters have led to skyrocketing shipping insurance costs, with shipping companies either diverting around the Cape of Good Hope or paying hefty premiums, causing fuel costs to surge. Data cited by Reuters shows that the Middle East war has driven up global container freight rates.

For importers, higher freight rates translate into thousands of dollars of additional landed cost per container. Fearing that core raw materials and factory products could become scarce or prohibitively expensive due to transport disruptions, they tend to accelerate stockpiling while capacity remains available and shipping routes are relatively safe.

Which Industries Benefit? Which Face Pressure?

Benefiting Industries: Port Logistics and Importers Who Pre-Stock

Port operators and logistics companies are the foremost winners. The record throughput at the Ports of Los Angeles and Long Beach directly drives demand for terminal operations, warehousing, trucking, and rail transport. The cargo surge also pushes up warehouse rental fees and short-haul transportation prices.

Large retailers and e-commerce companies, leveraging their financial strength and supply chain management capabilities, have secured inventory in advance. Retail giants like Walmart and Target, as well as e-commerce platforms such as Amazon, can use their own logistics networks to digest the early-arriving cargo and gain a cost advantage once tariffs take effect.

New Faces: Data Center Builders

Data center builders are a new participant in this pre-stocking rush.Data center builders are the new faces in this rush to ship goods. With the explosion of AI infrastructure investment, the core equipment needed for US data center construction (such as servers, cooling systems, and power equipment) relies heavily on imports from Asia. To avoid tariffs and shipping uncertainties, these companies have also joined the rush.

Industries Under Pressure: US Exporters and Small and Medium-Sized Importers

In stark contrast to the surge in imports, exports from the Port of Los Angeles in June increased only slightly by 0.2%, with the absolute volume just one-quarter of imports. This indicates that US export competitiveness remains weak, further suppressed by a strong dollar and potential retaliatory tariffs from trading partners (such as China and the EU).

Small and medium-sized importers lack the capital and warehousing capacity to stockpile on a large scale in advance. When the new tariffs take effect, their import costs will be significantly higher than those of large enterprises that stocked up early, putting them at risk of losing market share or even going bankrupt.

US manufacturers that rely on imported components are also under pressure. Although some companies have temporarily alleviated cost pressures by stockpiling in advance, if tariffs persist and the war continues to drive up shipping costs, their production costs will rise rigidly, undermining their competitiveness against local or nearshore suppliers.

What Does This Mean for US Manufacturing?

In the short term, the import surge may create a kind of "false prosperity"—the consumer market remains active, but this is built on the pre-consumption of inventory. Once tariffs are implemented, import volumes may plummet, leading to potential shortages on retail shelves and exposing the inadequacy of US manufacturing capacity.

In the long term, tariffs and supply chain risks are forcing a recalculation of the cost logic for reshoring US manufacturing. Previously, many companies were unwilling to move production lines back to the US due to cost factors. Now, considering increased tariffs, volatile shipping costs, and uncertainty in delivery lead times, the total cost of setting up factories in the US or nearshoring in Mexico has become more attractive. The CHIPS Act and IRA Act have already provided some incentives, and the new tariffs add further impetus.

However, for heavy-asset manufacturing (such as auto parts and chemicals), capacity building takes 3-5 years. In the short term, import dependence will remain high, and may even increase further due to the rush shipping.

What Does This Mean for Supply Chains: From "Just-in-Time" to "Just-in-Case"

This rush shipping wave marks an accelerated transformation of US supply chain strategy from "efficiency first" to "resilience first."

The traditional "Just-in-Time" (JIT) inventory management pursues zero inventory and low warehousing costs, but it is vulnerable to geopolitical and tariff uncertainties. Nowadays, companies are widely adopting the "Just-in-Case" strategy, increasing safety stock, diversifying suppliers, and strengthening nearshoring.

The record data from the Port of Los Angeles is a microcosm of this transformation: goods are no longer for immediate sale, but as reserves to hedge against future risks. At the same time, companies are actively evaluating alternative supply sources such as Mexico, India, and Vietnam, and even considering relocating some critical links back to the US. The geographical map of the supply chain is being redrawn.

What Does This Mean for Business Investment: Accelerated Divergence of Capital FlowsNew tariffs and shipping uncertainties are driving structural changes in corporate capital expenditure:

• Warehousing and Logistics Facility Investment: Demand for nearshore warehouses and inland distribution centers has surged, especially in regions close to consumer markets (e.g., California's Inland Empire, Texas).
• Nearshore Manufacturing Investment: The northern industrial belt of Mexico (Nuevo León, Coahuila) continues to attract automotive, electronics, and home appliance manufacturers to set up plants, leveraging USMCA preferential tariff rates to access the U.S. market.
• U.S. Domestic Capacity Investment: Strategic industries such as semiconductors, batteries, and clean technology are directly incentivized by the CHIPS Act and IRA, leading to accelerated implementation of expansion projects; traditional manufacturing (e.g., steel, plastics, chemicals) also gains momentum for capacity expansion due to tariff protection.
• Supply Chain Digitalization Investment: Companies are increasing investments in supply chain visibility software, risk early warning systems, and AI forecasting tools to cope with a more volatile environment.