By Xiao Ran, Vision Times
As Washington confirms plans for a possible late-March meeting between presidents Donald Trump and Xi Jinping, a dramatic U.S. Supreme Court ruling has injected a new wave of uncertainty into the next phase of Sino-U.S. diplomacy, particularly when it comes to trade relations.
On Feb. 20, the Court ruled that Trump’s sweeping tariffs imposed under the 1977 International Emergency Economic Powers Act (IEEPA) were unconstitutional. Chief Justice John Roberts, writing for the majority, held that while IEEPA allows a president to “regulate imports” during a national emergency, it does not grant the authority to levy tariffs. The Constitution vests taxing power in Congress.
The decision effectively dismantled the legal basis for approximately $175 billion in tariffs imposed during Trump’s second term. Since returning to office in 2025, Trump had relied heavily on IEEPA, citing the fentanyl crisis and trade imbalances to justify tariffs on Canada, Mexico, and China, along with a global baseline tariff framework.
RELATED: US Supreme Court Rules Most Trump Tariffs Unconstitutional
Not the end of tariffs
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Legal analysts caution that the ruling represents a procedural correction rather than a substantive rejection of tariff policy.
In dissent, Justices Clarence Thomas, Brett Kavanaugh, and Samuel Alito emphasized national security considerations. Kavanaugh’s lengthy opinion outlined alternative statutory pathways, including Section 232 of the 1962 Trade Expansion Act (national security tariffs), Section 122 of the 1974 Trade Act (temporary tariffs for balance-of-payments issues), Section 301 (unfair trade practices), and others.
Within hours of the ruling, Trump pivoted. Invoking Section 122, he announced a 10 percent temporary global tariff, later raised to 15 percent for a 150-day period. Observers say the rapid shift suggests the White House had contingency plans in place.
Economist Li Hengqing told Vision Times that “the White House legal team was clearly prepared. This was not improvised.” He argued that Trump’s approach reflects a negotiation style rooted in leverage and deal-making rather than traditional diplomatic gradualism.
A blow to Beijing
Political commentator Jason (pseudonym) noted that for China, the impact is less about absolute tariff levels than relative disadvantage. Under the new structure, Chinese goods still face preexisting Section 301 tariffs of 25 percent, plus the new 15 percent global tariff, bringing effective rates to roughly 40 percent. Meanwhile, Southeast Asian competitors such as Vietnam, Thailand, Malaysia, and India face only the 15 percent temporary tariff, which could drop to zero after 150 days.
The widening differential may accelerate supply-chain migration away from China, Jason argued, intensifying what he described as a “herd effect” among multinational corporations. For Beijing, the 150-day window presents a strategic dilemma: Negotiate concessions, hold firm and risk further isolation, or wait out legal uncertainty in Washington.
Li suggested the ruling reveals that U.S. strategy toward China is not monolithic. The majority opinion reflected constitutional concerns over executive power rather than a reversal of bipartisan skepticism toward Beijing. Congress has repeatedly shown overwhelming bipartisan support for tariffs and other measures targeting China, as well as strong backing for Taiwan. The Court’s decision underscores the importance of procedural limits rather than a retreat from competition.
Activist Sheng Xue described U.S.–China relations as a “high-intensity strategic rivalry” rooted in systemic differences. She argued that recent U.S. actions, including expanded export controls, restrictions on Chinese investment, and supply-chain diversification, have already reshaped the competitive landscape. “The Court did not reject tariffs as a tool,” she noted. “It required a lawful framework. The strategic competition has not disappeared.”
A new phase of competition
The White House has announced that Trump plans to visit Beijing from March 31 to April 2, though Chinese officials have characterized discussions as ongoing. Li suggested the visit could still face adjustments, noting that some U.S. policy circles worry about optics. Domestically, Trump may see a summit as an opportunity to demonstrate deal-making prowess ahead of midterm political cycles.
Jason observed that the ruling removes what he called IEEPA’s “three unlimited advantages,” no rate cap, no time limit, and no investigative procedure, forcing Trump to rely on narrower statutory tools that require additional procedural steps. Meanwhile, more than 1,000 lawsuits challenging previously collected tariffs remain pending, adding further uncertainty.
Sheng also emphasized that Taiwan remains central. The longstanding U.S. “Six Assurances” include a commitment not to consult Beijing in advance on arms sales to Taiwan. Whether a Trump–Xi meeting alters that posture will be closely watched.
Jason described Feb. 20 as a potential “inflection point” in global supply-chain restructuring. Small legal adjustments, he argued, can produce large geopolitical ripple effects. Taken together, experts agree the Supreme Court ruling does not mark the end of tariff-driven strategy. Rather, it forces recalibration. Still, financial institutions have warned that rebuilding a legally durable tariff framework could take months.
