WASHINGTON — President Donald Trump announced a new 15% global baseline tariff on imports Wednesday, hours after the Supreme Court invalidated his previous attempts to impose sweeping tariffs through executive action. The move, described by the administration as a necessary step to protect American industries and workers, immediately sparked confusion among trading partners and renewed concerns about a potential trade war.
The Supreme Court’s ruling on Friday struck down tariffs imposed under the International Emergency Economic Powers Act (IEEPA), a 1977 law intended to address national emergencies. The 6-3 decision found that the president lacked the authority to impose tariffs as a means of regulating commerce, a power reserved for Congress. Chief Justice John Roberts, writing for the majority, stated that IEEPA “contains no reference to tariffs or duties,” and that no president had previously interpreted the law to confer such power.
Trump, reacting to the ruling, labeled the justices “a disgrace to the nation” and vowed to find alternative legal avenues for implementing his tariff policies. The newly announced tariffs, effective immediately, are being justified under different authorities, though the specific legal basis remains unclear. The administration has initiated investigations into alleged unfair trade practices, potentially paving the way for further tariffs on a country-by-country basis, according to sources familiar with the deliberations.
The initial tariffs, impacting a broad range of goods from all countries, represent a significant shift from Trump’s previous approach, which often targeted specific nations like China, Canada, and Mexico. Stephanie Rickard, a professor of political economy at the London School of Economics, explained that Trump’s earlier tariffs were “usually really specific to protect a particular product,” while the current policy is a “very blunt way” of imposing trade barriers.
The Council on Foreign Relations noted that the earlier tariffs, dubbed the “fentanyl orders” and the “reciprocal order,” had been intended to address specific concerns related to illicit drug imports and perceived unfair trade practices. Though, the Supreme Court’s decision effectively nullified those efforts, leaving the administration scrambling to find alternative mechanisms for achieving its trade objectives.
The economic implications of the new tariffs are uncertain. While the administration claims they will generate revenue and encourage domestic manufacturing, economists warn of potential negative consequences for consumers, and businesses. Justice Brett Kavanaugh, in his dissenting opinion, highlighted the potential for significant refunds to importers – estimated at over $200 billion in 2025 – and the disruption to existing trade agreements. He warned that the court’s decision could “generate uncertainty regarding various trade agreements,” including those with China, the United Kingdom, and Japan.
Public opinion regarding the tariffs is also shifting. As the cost of living continues to rise in the United States, consumers are increasingly aware that they are bearing the brunt of the increased costs, according to Rickard. This growing discontent could develop into a significant factor in the upcoming midterm elections, where the tariffs are expected to be a key issue.
The international response to the new tariffs has been muted, with many countries adopting a wait-and-see approach. Rickard suggested that this hesitancy stems from Trump’s history of announcing and then walking back tariff threats, as well as his tendency to negotiate bilateral deals. “No one wins from a trade war,” she said, adding that most countries will likely avoid immediate retaliation, preferring to observe the situation unfold.
The Supreme Court’s ruling, while a setback for Trump, does not necessarily signal a broader shift in the court’s relationship with the administration, according to Rickard. The decision was narrowly focused on the issue of taxation and tariffs, and she cautioned against overinterpreting it as a sign of a fundamental change in the court’s approach. However, she acknowledged that the ruling does remove one key tool from Trump’s arsenal, limiting his ability to unilaterally impose tariffs under IEEPA.
The administration has not yet clarified whether the new tariffs will be applied at the 15% rate announced Wednesday, or whether they will revert to pre-existing rates. This ambiguity has further fueled uncertainty among businesses and trading partners, leaving the future of global trade in a state of flux.
