On February 20, 2026, the U.S. Supreme Court delivered the most consequential trade ruling in modern history: the International Emergency Economic Powers Act (IEEPA) does not authorize the president to impose tariffs. Within 48 hours, the administration responded with a new 15% global tariff under Section 122. If you import goods into the United States, the ground beneath your supply chain shifted this week. Here is exactly what happened, what it means, and what you should do next.

In This Guide

What Just Happened: The Supreme Court Strikes Down IEEPA Tariffs

On February 20, 2026, the United States Supreme Court issued a landmark ruling that fundamentally redraws the boundaries of presidential trade authority. In a decision that sent shockwaves through global markets, the Court held that the International Emergency Economic Powers Act (IEEPA) does not grant the president the power to impose tariffs.

The IEEPA, originally enacted in 1977, gives the president broad authority to regulate economic transactions during declared national emergencies. Since 2025, the Trump administration had relied heavily on IEEPA as the legal basis for sweeping tariffs on imports from China, Canada, Mexico, and dozens of other countries. The administration argued that trade deficits and fentanyl trafficking constituted national emergencies justifying tariff action under the statute.

The Supreme Court disagreed. In its ruling, the Court found that IEEPA's language authorizes the regulation, blocking, and freezing of financial transactions and property interests — but it does not extend to the imposition of customs duties on imported goods. The power to levy tariffs, the Court held, is a function of trade law, not emergency economic powers. Congress, not the president acting unilaterally under IEEPA, holds that authority.

What This Means Legally: Every tariff that was imposed under IEEPA authority — including broad duties on Chinese, Canadian, and Mexican goods — was declared invalid by the Court. This does not affect tariffs imposed under other statutory authorities (Section 301, Section 232, or traditional trade remedy laws). But the IEEPA-based tariffs, which covered hundreds of billions of dollars in annual imports, are now legally void.

The ruling created immediate chaos at U.S. ports. Customs and Border Protection (CBP) had been collecting IEEPA-based duties for over a year. The legal status of those previously collected duties is now uncertain, and importers are already filing claims for refunds. Meanwhile, CBP initially continued collecting IEEPA tariffs at certain ports in the days following the ruling — a situation that has drawn sharp criticism from trade attorneys and importers alike.

For importers, the ruling was both a victory and a warning. The IEEPA tariffs are gone, but the administration moved with extraordinary speed to replace them.

The Immediate Response: Section 122 and the 15% Global Tariff

Within two days of the Supreme Court ruling, the administration pivoted to an alternative legal authority: Section 122 of the Trade Act of 1974.

Section 122 authorizes the president to impose temporary import surcharges of up to 15% to address large and serious balance-of-payments deficits. Unlike IEEPA, Section 122 is explicitly a trade provision — it was designed for exactly this kind of action. However, it comes with significant limitations that IEEPA did not have.

Here is the timeline of what happened:

1

February 20 — Supreme Court Rules

The Court strikes down IEEPA tariffs. Markets react immediately. The dollar weakens against major currencies. Import-dependent stocks surge on expectations of lower costs. Trade attorneys begin preparing refund claims for IEEPA duties already collected.

2

February 22 — Section 122 Invoked (10% Duty)

President Trump signs an executive order invoking Section 122 to impose a 10% temporary duty on imports, effective February 24, 2026. The order cites the U.S. trade deficit — which exceeded $1.1 trillion in 2025 — as justification under Section 122's balance-of-payments provision.

3

February 22 (Later That Day) — Raised to 15%

Hours after the initial announcement, the rate is raised to 15% — the maximum permitted under Section 122. This applies to approximately $1.2 trillion in annual imports, covering roughly 34% of all goods entering the United States. The duty is effective as of February 24, 2026.

4

The 150-Day Clock

Section 122 contains a critical limitation: temporary duties can only last 150 days without Congressional authorization. That means this 15% global tariff expires around July 24, 2026 unless Congress passes legislation to extend or replace it. The administration has signaled it will seek Congressional action, but passage is far from guaranteed.

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Key Number: The 15% Section 122 tariff applies to approximately $1.2 trillion in annual imports — about 34% of all goods entering the U.S. This is the broadest single tariff action in decades, touching virtually every product category from electronics and auto parts to food and consumer goods.

Enforcement Confusion at the Border

In the days immediately following the Supreme Court ruling, multiple reports emerged of CBP continuing to collect IEEPA-based tariffs at certain ports of entry — despite the Court having declared them invalid. This created a dual-collection problem where some importers were assessed both the now-void IEEPA duties and the new Section 122 duties.

If you imported goods between February 20 and February 24, review your entry documents carefully. You may have grounds to protest IEEPA-based assessments. Consult your customs broker or trade attorney immediately.

Country-by-Country Tariff Breakdown

The tariff landscape in 2026 varies dramatically depending on where your goods originate. Here is the current status for the three largest U.S. trading partners, plus the new global baseline.

Country Current Tariff Rate Legal Basis Key Exemptions
China 10% fentanyl + 15% global + Section 301 (varies) Bilateral agreement (Nov 2025), Section 122, Section 301 Fentanyl tariff reduced from 20% to 10% per Nov 2025 deal
Canada 35% (non-USMCA) or 15% global (USMCA goods) Section 122, USMCA 89% of imports now claiming USMCA exemption from country-specific rate
Mexico 25% (non-USMCA) or 15% global (USMCA goods) Section 122, USMCA USMCA-compliant goods exempt from 25% country rate
All Other Countries 15% global tariff Section 122 150-day expiration; product-specific exclusions may follow

China: A Layered Tariff Structure

Chinese imports face the most complex tariff situation of any trading partner. Here is how the layers stack up:

  • Fentanyl-related tariff (10%): Originally imposed at 20% as part of the administration's counter-narcotics strategy. Reduced to 10% following a November 2025 bilateral agreement in which China committed to expanded precursor chemical controls. This tariff is separate from the IEEPA-based duties that were struck down.
  • Section 122 global tariff (15%): The new baseline tariff that applies to all countries, including China. Effective February 24, 2026.
  • Section 301 tariffs (varies by product): These longstanding tariffs on specific Chinese goods — targeting technology, industrial components, and other strategic products — remain in effect. They were imposed under Section 301 of the Trade Act of 1974 (a different provision than Section 122) and were not affected by the Supreme Court ruling.

The result: depending on the product, importers of Chinese goods face effective duty rates ranging from 25% to over 50% when all layers are combined. Electronics, machinery, chemicals, and consumer products are particularly affected.

Canada: USMCA Is Your Lifeline

Canada has been subject to a 35% tariff since August 2025. However, the United States-Mexico-Canada Agreement (USMCA) provides a critical exemption: goods that meet USMCA rules-of-origin requirements are exempt from the country-specific tariff.

This exemption has proven massively important. As of early 2026, 89% of Canadian imports are entering the U.S. under USMCA claims, avoiding the 35% country-specific rate. However, these goods may still be subject to the new 15% Section 122 global tariff depending on product category and how CBP applies the new duty structure.

If you import from Canada and are not currently claiming USMCA origin, this is the single most impactful thing you can do to reduce your tariff exposure. Work with your supplier to obtain proper certificates of origin and verify that your products meet the agreement's rules-of-origin requirements.

Mexico: Nearshoring Under Pressure

Mexican imports carry a 25% tariff imposed in 2025, with the same USMCA exemption structure as Canada. For businesses that have nearshored manufacturing to Mexico to reduce dependence on China, the USMCA exemption is what makes the strategy viable.

The new 15% Section 122 global tariff adds a further layer of cost, but USMCA-compliant goods still benefit significantly compared to non-USMCA imports. Mexico remains one of the most cost-effective sourcing alternatives for businesses moving away from China — provided the goods qualify under USMCA.

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Practical Tip: If you are importing from Canada or Mexico, audit your USMCA compliance immediately. The difference between USMCA-qualifying and non-qualifying goods can be 20-35 percentage points in duty rates. Many importers are leaving money on the table by not properly documenting origin.

What This Means for Your Supply Chain

The combined effect of the Supreme Court ruling, the new Section 122 tariff, and ongoing country-specific duties creates a set of operational and financial challenges that every importer needs to address. Here are the four most significant impacts:

Cost Increases of 10-15%

For most importers, the 15% Section 122 tariff translates directly to a 10-15% increase in landed cost. This applies even to countries that previously had no special tariff treatment. Importers of European, Southeast Asian, Indian, and South American goods are feeling tariff pressure for the first time in the current trade cycle.

From Just-in-Time to Just-in-Case

Tariff uncertainty is killing lean inventory strategies. When duty rates can change by executive order in 48 hours, businesses cannot afford to operate with minimal stock. The trend is toward carrying 60-90 days of inventory instead of 30 — a shift that requires significantly more warehouse space and working capital.

Supply Chain Diversification

The China-plus-one strategy has accelerated into China-plus-many. Businesses are spreading sourcing across Vietnam, India, Mexico, Colombia, and other countries to reduce concentration risk. No single country tariff rate should be able to break your supply chain.

Warehouse Demand Surging

The shift to larger safety stocks is driving record demand for warehouse space, especially in port-adjacent markets like Miami-Dade County. Importers who delayed securing warehouse capacity are now scrambling as vacancy rates in industrial corridors tighten further.

The 150-Day Uncertainty Window

Perhaps the most challenging aspect of the current tariff environment is the built-in expiration of the Section 122 tariff. At 150 days, the 15% global duty sunsets around July 24, 2026 — unless Congress acts to extend or replace it.

This creates a planning nightmare. Do you stockpile inventory now at 15% duty, hoping rates go higher after Congress acts? Do you slow purchasing, betting the tariff expires and isn't replaced? The answer depends on your product, your margins, and your risk tolerance. But one thing is certain: businesses that have flexible warehousing arrangements will navigate this window far better than those locked into rigid commitments.

Don't Let Tariff Chaos Disrupt Your Fulfillment

Miami Alliance 3PL offers flexible storage with no long-term contracts and no minimums — scale up to stockpile inventory, scale down when policy stabilizes.

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How a Miami 3PL Protects You During Tariff Uncertainty

In a tariff environment this volatile, your logistics strategy is not just an operational decision — it is a financial one. Where you warehouse goods, how fast you can adjust inventory levels, and whether you can take advantage of trade-zone benefits all directly impact your bottom line. Here is how a Miami-based 3PL provides specific, tangible advantages during this period:

Foreign Trade Zone Advantages

Miami-Dade County is home to one of the nation's most active Foreign Trade Zones (FTZ). Goods stored in an FTZ are considered outside U.S. customs territory for duty purposes. This means you can defer duty payments until goods enter domestic commerce, reduce duties by using the FTZ's "inverted tariff" provisions, or re-export goods without ever paying U.S. duties. In a 15% global tariff environment, FTZ benefits can save thousands per shipment.

Flexible Storage for Stockpiling

When tariff rates are about to change — or when you suspect a 150-day tariff may be extended — the smart move is often to accelerate imports and stockpile inventory at the current rate. A 3PL with flexible, no-minimum-commitment storage lets you scale from 10 pallets to 500 pallets without breaking a lease or signing a multi-year deal. When policy stabilizes, you scale back down.

Latin America Gateway: The Nearshoring Edge

Miami is the undisputed gateway to Latin America. For businesses nearshoring production from China to Mexico, Colombia, Brazil, or other LATAM countries, Miami offers the shortest supply chain path. PortMiami handles direct routes to every major Latin American port. Goods arrive faster, clear customs sooner, and reach your customers in days instead of weeks.

No Minimums, Maximum Flexibility

Trade policy in 2026 demands agility. You cannot predict what tariff rates will look like in July, let alone December. A 3PL with no minimum order requirements and no long-term contracts gives you the freedom to adjust your supply chain in real time — increase imports when rates are favorable, pause when they are not, and never pay for space you are not using.

Miami's position is unique in the U.S. logistics landscape. It combines a top-5 container port, the number-one international freight airport, a major Foreign Trade Zone, direct Latin American trade routes, and a deep pool of bilingual customs brokers and freight forwarders — all within a 15-minute drive. No other U.S. metro offers this combination of trade infrastructure, and in the current tariff environment, that infrastructure translates directly to cost savings and supply chain resilience.

Timeline: Key Tariff Events 2025-2026

The current tariff landscape did not emerge overnight. Here is a chronological summary of the major trade policy actions that led to where we are today:

1

Early 2025 — IEEPA Tariffs Imposed

The Trump administration begins using IEEPA as the legal basis for broad tariffs, citing national emergencies related to trade deficits and fentanyl trafficking. Tariffs are imposed on Chinese, Canadian, and Mexican goods, with rates ranging from 10% to 35%.

2

Mid-2025 — Legal Challenges Filed

Trade associations, importers, and multiple state attorneys general file lawsuits challenging the legality of IEEPA-based tariffs. Cases work through the federal court system. Lower courts issue mixed rulings.

3

August 2025 — Canada Tariff Reaches 35%

The tariff on Canadian imports is raised to 35%, the highest rate since the Smoot-Hawley era. USMCA-compliant goods are exempt, driving a massive surge in USMCA origin claims. Canadian trade associations call the rate "economically devastating."

4

November 2025 — China Fentanyl Deal

The U.S. and China reach a bilateral agreement under which China expands precursor chemical controls. In exchange, the fentanyl-related tariff on Chinese goods is reduced from 20% to 10%. Other tariffs on Chinese goods remain in place.

5

February 20, 2026 — Supreme Court Ruling

The Supreme Court rules that IEEPA does not authorize tariffs. All IEEPA-based duties are declared invalid. Markets surge. Customs enforcement enters a period of confusion as CBP ports receive conflicting guidance.

6

February 22, 2026 — Section 122 Invoked

The administration pivots to Section 122 of the Trade Act of 1974, imposing a 10% temporary duty on imports (later raised to 15% the same day). The duty takes effect February 24 and applies to approximately $1.2 trillion in annual imports. The 150-day expiration clock begins.

7

February 24, 2026 — New Tariffs Take Effect

The 15% global tariff under Section 122 goes into effect. Importers face a new baseline cost increase on virtually all goods. The logistics industry braces for a wave of supply chain adjustments, inventory stockpiling, and accelerated nearshoring.

Frequently Asked Questions

What did the Supreme Court rule about IEEPA tariffs?

On February 20, 2026, the U.S. Supreme Court ruled that the International Emergency Economic Powers Act (IEEPA) does not authorize the president to impose tariffs. All tariffs previously enacted under IEEPA authority were declared invalid. The Court held that IEEPA permits the regulation of financial transactions and property, but the power to levy customs duties belongs to Congress under trade law, not to the president under emergency powers.

What is the Section 122 tariff and when does it take effect?

Section 122 of the Trade Act of 1974 authorizes the president to impose temporary duties of up to 15% for 150 days to address large trade deficits. On February 22, 2026, President Trump invoked Section 122 to impose a temporary duty on imports, effective February 24. The rate was initially set at 10% and raised to 15% the same day — the statutory maximum. This tariff applies to approximately $1.2 trillion in annual imports and expires after 150 days (around July 24, 2026) unless Congress acts to extend or replace it.

How do the 2026 tariffs affect imports from China?

Chinese imports face a layered tariff structure in 2026. The fentanyl-related tariff was reduced from 20% to 10% following a November 2025 bilateral agreement. The new 15% global tariff under Section 122 also applies. Combined with pre-existing Section 301 tariffs on specific product categories, Chinese imports face effective duty rates ranging from 25% to over 50% depending on the product classification.

Are USMCA-compliant goods from Canada and Mexico exempt from tariffs?

Yes. Goods that qualify under USMCA rules of origin are exempt from the country-specific tariffs on Canada (35%) and Mexico (25%). As of early 2026, approximately 89% of Canadian imports are entering under USMCA exemptions. However, the new 15% Section 122 global tariff may still apply to some categories. Importers should verify USMCA compliance documentation carefully with their customs broker.

How can a 3PL help importers manage tariff uncertainty?

A 3PL warehouse in a strategic location like Miami provides several tariff-related advantages: access to Foreign Trade Zones where duties can be deferred or reduced, flexible storage capacity to stockpile inventory ahead of tariff increases, proximity to PortMiami for efficient customs clearance, and the ability to scale warehouse space up or down as trade policy shifts. Miami's position as the gateway to Latin America also supports nearshoring strategies that reduce dependence on high-tariff countries.