WASHINGTON: In a significant setback to President Donald Trump’s economic agenda, the US Supreme Court on Friday struck down the sweeping global import tariffs imposed during his second term. The court ruled that Trump had overstepped his authority by invoking emergency powers to levy tariffs on a broad range of imports. The justices observed that the law he relied upon was intended for use only during genuine national emergencies and did not authorise the blanket imposition of trade duties. The ruling marks a major turning point in the global trade war that Trump has escalated since returning to office. His tariff strategy, central to his economic and foreign policy, now faces serious constitutional barriers.
Abuse of power
In a 6–3 decision, the Supreme Court held that the International Emergency Economic Powers Act (IEEPA) of 1977 does not grant the president authority to impose sweeping import tariffs. The US Constitution clearly vests the power to levy taxes and duties in Congress, not the executive branch. By acting unilaterally, the court found, Trump had exceeded the constitutional limits of presidential authority. Trump had defended the tariffs as essential to safeguarding America’s economic security. He argued that without aggressive trade measures, the United States would face economic decline and strategic vulnerability. According to the administration, the tariffs were necessary to reduce the trade deficit, pressure foreign trading partners into fairer agreements, and strengthen domestic manufacturing.
However, the Supreme Court rejected this reasoning. The justices emphasised that while the IEEPA allows the president to regulate certain economic transactions during a declared national emergency, it does not explicitly authorise the imposition of tariffs.
Chief Justice John Roberts stated that the president must demonstrate clear and express authorisation from Congress before exercising the extraordinary power to impose trade taxes, authority that, in this case, he could not show. The court’s decision affirmed an earlier ruling by the US Court of International Trade, which had concluded that Trump had improperly used emergency powers to justify his tariff regime. Legal challenges were brought by a coalition of small businesses and 12 Democratic-led states, who argued that the tariffs caused financial harm and violated constitutional principles.
Trump is the first president to attempt to impose tariffs on nearly all major trading partners through the IEEPA framework. His measures became a cornerstone of his second-term economic policy. While supporters viewed the strategy as a bold defence of American interests, critics warned that it destabilised markets, increased consumer costs, and strained diplomatic relations. The stock market experienced significant volatility during the implementation of the tariffs, reflecting broader uncertainty in global trade.
By ruling against the administration, the Supreme Court has imposed strict constitutional limits on the scope of presidential economic authority. The decision underscores that emergency powers are not unlimited and must remain within the framework established by Congress.
Executive defiance and new legal strategy
The constitutional confrontation did not end with the court’s verdict. Within hours of the ruling, Trump signed a new proclamation sharply criticising the Supreme Court’s decision and rejecting what he described as an absurd and terrible interpretation of executive power. In an extraordinary move, he announced a fresh 10 per cent global tariff on all imports, signalling his determination to continue his protectionist agenda.
This unprecedented response has intensified tensions between the executive and judicial branches of government. Observers describe the situation as one of the most significant power struggles in modern American constitutional history. By challenging the court’s authority and moving swiftly to implement alternative measures, Trump has ignited a new political and legal crisis.
Rather than relying again on the IEEPA, the administration has turned to Section 122 of the Trade Act of 1974. This provision grants the president temporary authority to impose tariffs of up to 15 per cent for a period of 150 days in order to address balance-of-payments deficits or other urgent trade concerns. The White House is now using this limited-time authority as a strategic workaround to continue its tariff policy while navigating around the Supreme Court’s restrictions.
Legal experts are sharply divided over the implications of this manoeuvre. Some argue that Section 122 provides a legitimate, albeit temporary, pathway for executive action. Others contend that the move represents an attempt to undermine the spirit of the court’s ruling by exploiting a different statutory mechanism. The broader concern, critics say, is whether the administration is respecting the principle of separation of powers that lies at the heart of the American constitutional system.
Trump has escalated the confrontation by publicly criticising the justices who ruled against him, accusing them of being unpatriotic and disloyal to the Constitution. Such remarks have raised alarms among constitutional scholars, who view attacks on the judiciary as threats to its independence. The Supreme Court’s authority rests not only on legal doctrine but also on respect for its institutional role within a democratic framework.
Beyond domestic constitutional implications, the economic consequences could be far-reaching. The renewed tariff announcement risks intensifying trade disputes with major global partners, potentially triggering retaliatory measures. Markets are closely monitoring developments, as further escalation could disrupt supply chains, increase consumer prices, and slow global economic growth.
Supporters of the president maintain that decisive action is necessary to counter what they see as unfair trade practices by foreign nations. They argue that strong executive leadership is essential to protect American industries and workers. Critics, however, warn that unilateral tariff policies and open defiance of judicial rulings could erode confidence in US governance and destabilise international economic relations.
In essence, the unfolding dispute represents more than a disagreement over trade policy. It reflects a deeper constitutional debate about the limits of presidential power, the role of Congress in taxation, and the independence of the judiciary. As Trump continues to pursue his protectionist agenda through alternative legal tools, the United States finds itself at the centre of an unprecedented struggle between branches of government.
Whether this confrontation leads to further legal battles or political compromise remains uncertain. What is clear is that the Supreme Court’s ruling has reshaped the landscape of American trade policy and set the stage for a defining constitutional moment in Trump’s second term.
