TTT - Tariffs Trump Trouble

US Tariff Policy After 2025: Supreme Court Decision, New Tariffs, and Global Consequences

In 2025–2026, US tariff policy became one of the main drivers of change in global trade. New tariffs, legal disputes over their legality, and the reaction of financial markets created a situation that could accelerate structural changes in the global economy — from the restructuring of trade flows to the gradual process of de-dollarization.

Supreme Court Decision and Tariff Repeal

In early 2026, the US Supreme Court issued a landmark decision: the majority of tariffs imposed by Donald Trump's administration in 2025 were declared illegal. The court ruled that the president does not have the authority to unilaterally impose large-scale import duties without explicit authorization from Congress.

As a result of this decision, US Customs and Border Protection stopped collecting tariffs imposed under the International Emergency Economic Powers Act (IEEPA). According to economists' estimates, more than $175 billion in tariff revenue, which could potentially be returned to importers, was called into question.

However, the effect of the decision may be limited. The administration quickly announced its intention to introduce new tariffs on other legal grounds.

New Global Tariffs

After the court's decision, the White House effectively replaced the old tariffs with new ones. A global import tariff of approximately 15% was announced, temporarily covering a wide range of goods.

This created a paradoxical situation:

• formally, the old tariffs were abolished;
• in practice, their economic effect was partially restored by new duties.

Some countries even benefited from the new system. For example, the average tariff for Brazil and China actually decreased compared to previous targeted tariffs.

Financial Market Reaction

The announcement of new tariffs and legal uncertainty caused a rapid market reaction:

• the dollar weakened by approximately 0.4%,
• S&P 500 futures fell by approximately 0.5%,
• Nasdaq and Dow also showed declines,
• cryptocurrencies reacted with a decrease (Bitcoin approximately –2.8%).

Investors perceived the event as a signal of increasing trade instability.

US Trade Deficit

Despite large-scale tariff measures, their effect on the overall US trade balance proved limited.

At the end of 2025:

• the total US foreign trade deficit remained almost unchanged,
• tariff policy reduced the deficit by only about $2 billion.

At the same time, the deficit with some countries even increased. The deficit increased especially noticeably with:

• Mexico
• Vietnam
• Taiwan.

Mexico, meanwhile, became the largest trading partner of the US by total trade volume.

This confirms the trend of nearshoring and restructuring of supply chains.

Europe and New Trade Alliances

The European Union, reacting to the unpredictable US tariff policy, began to actively diversify trade ties.

The EU accelerated negotiations or concluded new agreements with:

• India
• Indonesia
• Southeast Asian countries
• Latin American states.

This is part of a long-term strategy to reduce dependence on the American market.

Who Really Pays for Tariffs

Economic studies show that the main financial burden of tariffs falls not on foreign producers, but on the US domestic economy.

According to economists' estimates, 60–90% of the cost of tariffs is actually paid by:

• American importers
• companies
• end consumers through higher prices.

Even after the abolition of some tariffs, analysts believe that prices for consumers may not decrease, as companies have already adapted their prices to the new cost structure.

De-dollarization and the New Structure of World Trade

The rise of tariff conflicts and geopolitical tensions are encouraging countries to seek alternatives to the dollar-based trading system.

Key trends include:

• expansion of bilateral trade agreements without the use of the dollar
• increasing role of regional currencies
• creation of new economic blocs.

Although the dollar remains the dominant reserve currency, de-dollarization is gradually gaining momentum, especially among BRICS countries and large developing economies.

Conclusion

US tariff policy in 2025–2026 became a catalyst for deeper structural changes in the global economy. The Supreme Court's decision cast doubt on the legal basis of some tariffs, but the administration quickly found new mechanisms for their implementation.

As a result, world trade is entering a new phase:

• restructuring of supply chains
• growth of regional trade alliances
• increased currency competition
• gradual transformation of the global trading system.