Why Donald Trump is introducing New Global Trade Tariffs.

By Sizwe Masombuka.

On Saturday, February 21, U.S. President Donald Trump announced a uniform 15% tariff on imports from all countries. The decision followed a ruling by the U.S. Supreme Court that invalidated most of the tariff measures introduced in 2025. 

While the judgment limits the use of certain emergency powers, it does not eliminate the administration’s broader capacity to pursue trade restrictions through alternative legal channels. As a result, the ruling is widely viewed not as a reversal of policy, but as a procedural constraint.

The Court struck down tariffs imposed under the International Emergency Economic Powers Act of 1977 (IEEPA). In April 2025, President Trump had declared a national emergency and introduced duties ranging from 10% to 50% on imports from nearly all countries. The measures were justified on grounds including migration control, drug trafficking, and structural economic imbalances. Notably, Russia, Belarus, Cuba, and North Korea were excluded from that framework. 

In its decision, the Supreme Court held that IEEPA does not grant the President unilateral authority to impose comprehensive tariffs in the absence of a state of war. According to the ruling, Congress must first authorize such measures. However, tariffs grounded in national security considerations remain unaffected. 

Importantly, the administration retains other statutory instruments. In announcing the new 15% framework, the President referenced provisions of the Trade Act of 1974, which allow the executive branch to address balance-of-payments concerns and structural trade distortions through surcharges and targeted restrictions. Although rarely used in comparable scope, this legal pathway provides a formal mechanism for sustaining a protection-oriented course.

Politically, the escalation unfolds against the backdrop of approaching midterm elections. For the White House, projecting policy consistency and decisiveness remains strategically important. 

The President publicly criticized the Court’s ruling, yet reaffirmed that the administration would proceed through “alternative mechanisms.” The dispute reflects institutional tension within the U.S. system, but it does not indicate a retreat from the broader economic agenda.

Market reaction has been cautious. A key issue concerns previously collected customs duties and the potential obligation to reimburse importers. Estimates cited by The New York Times, referencing Capital Economics, suggest that refunds could reach approximately $120 billion, or 0.5% of U.S. GDP, if mandated. At present, large-scale repayments appear unlikely. The full macroeconomic impact, positive or negative, will likely become visible only over a one- to two-year horizon.

The international dimension is equally significant. Heightened trade uncertainty may complicate transatlantic coordination. The previously negotiated 15% tariff framework between Washington and Brussels – reached with European Commission President Ursula von der Leyen – remains under parliamentary consideration in Europe. Any disruption or delay could introduce renewed volatility into U.S.–EU economic relations and complicate broader political coordination, including on Ukraine.

Implications for U.S.–South Africa Relations

The uniform 15% tariff carries potential consequences for South Africa. Bilateral trade encompasses automotive exports, agricultural goods, and critical minerals, particularly platinum group metals that are strategically important for global supply chains. Should South African exports be fully subjected to the revised regime without exemptions, competitiveness in the U.S. market may weaken, especially in value-sensitive sectors. The development may also influence discussions surrounding the future of preferential arrangements, including AGOA, and could accelerate Pretoria’s efforts to diversify export destinations and reduce exposure to single-market volatility.

Conclusion

The current dispute between the executive branch and the judiciary underscores structural tensions within the U.S. political system. Yet the broader trajectory of American trade policy appears unchanged. The key question is no longer whether tariffs will remain part of Washington’s toolkit, but how expansively they will be applied and how other major economies will respond. 

If the 15% baseline becomes institutionalized, it may signal a deeper shift from episodic protectionism toward a more durable reconfiguration of global trade rules. In that scenario, partners such as the European Union and South Africa will not merely adjust to U.S. policy – they will be compelled to redefine their own strategic economic positioning in response.

The views expressed here are not necessarily those of Fullview.

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