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The International Emergency Economic Powers Act (IEEPA), Title II of Pub. L. 95–223, 91 Stat. 1626, enacted December 28, 1977, is a United States federal law authorizing the president to regulate international commerce after declaring a national emergency in response to any unusual and extraordinary threat to the United States which has its source in whole or substantial part outside the United States. The act was signed by President Jimmy Carter on December 28, 1977.

Section 301 of the U.S. Trade Act of 1974 (Pub. L. 93–618, 19 U.S.C. § 2411, last amended March 23, 2018) authorizes the President to take all appropriate action, including tariff-based and non-tariff-based retaliation, to obtain the removal of any act, policy, or practice of a foreign government that violates an international trade agreement or is unjustified, unreasonable, or discriminatory, and that burdens or restricts U.S. commerce. Section 301 cases can be self-initiated by the United States Trade Representative (USTR) or as the result of a petition filed by a firm or industry group. If USTR initiates a Section 301 investigation, it must seek to negotiate a settlement with the foreign country in the form of compensation or elimination of the trade barrier. For cases involving trade agreements, the USTR is required to request formal dispute proceedings as provided by the trade agreements. The law does not require that the U.S. government wait until it receives authorization from the World Trade Organization (WTO) to take enforcement actions, and the President is increasingly focused on enforcing intellectual property (IP) rights (under Agreements that may be outside of the WTO) under the "Special" 301 amendments but the U.S. has committed itself to pursuing the resolution of disputes under WTO agreements through the WTO dispute settlement mechanism, which has its own timetable.