Permanent imports of defense articles into the U.S. are not regulated by which agency?

The regulation of permanent imports of defense articles primarily falls under the jurisdiction of the Department of State, Department of Defense, and Department of Commerce, each having specific roles regarding defense trade and export controls. The Department of State oversees the export of defense articles and services under the Arms Export Control Act, while the Department of Defense plays a significant role in military-related imports and national security matters. The Department of Commerce manages certain commodities and technologies that may fall under dual-use categories, which are relevant for various imports and exports.

The role of the Federal Trade Commission does not extend to the regulation of defense articles; instead, it focuses on protecting consumers and promoting competition by preventing unfair, deceptive, or anti-competitive business practices. This agency does not have a mandate related to defense imports or the security implications associated with them. Therefore, it does not regulate permanent imports of defense articles, making it the correct answer.