by Olivia Baldwin*
In February of 2025, President Trump declared a national emergency under the International Emergency Economic Powers Act (“IEEPA”) in order to impose sweeping tariffs on major U.S. trading partners. Exercising such expansive economic authority on the basis of vague statutory language raises serious separation of powers concerns under the nondelegation doctrine. Although the Supreme Court has invalidated statutes on nondelegation grounds only twice, the current Court has signaled renewed interest in enforcing the doctrine. This resurgence raises a critical question: Should the nondelegation canon apply less rigorously when Congress delegates power to the President in matters of foreign affairs? The asserted “foreign affairs” exception, based largely on the Court’s opinion in U.S. v. Curtiss-Wright Exp. Corp. has long insulated such legislative delegations from meaningful scrutiny. However, a foreign affairs exception has no basis in the text of the Constitution and is inappropriate given modern convergence between foreign and domestic matters. This Contribution argues that the nondelegation doctrine should apply with equal force in both foreign and domestic contexts, and that the proper analysis is whether the President possesses independent power over the delegated matter. Using IEEPA as a focal point, this Contribution demonstrates that “foreign affairs” provide no coherent or constitutionally grounded justification for relaxing the nondelegation doctrine.