The Constitutional Crisis and Global Trade Reconfiguration Triggered by Trump's Declaration of National Emergency: A Systematic Analysis of the 2025 Tariff Emergency
On April 2, 2025, invoking the International Emergency Economic Powers Act (IEEPA), Donald Trump declared a national emergency to initiate sweeping tariff policies. This decision not only breached conventional constitutional constraints on executive power but also reshaped global trade norms through the "national security exception." This paper conducts an in-depth analysis from three dimensions—constitutional logic, economic impact, and international order—to unravel the underlying power dynamics and systemic risks. I. Constitutional Crisis: Unfettered Expansion of Executive Power 1. Subversive Reconstruction of Legal Frameworks 1.1 Core Contradictions in Constitutional Disputes Article I of the U.S. Constitution explicitly vests trade authority in Congress, yet Trump leveraged IEEPA §1702 to redefine "supply chain risks" as national security threats, thereby expanding executive powers. The "judicial deference to national security" principle established ...