The U.S. science, technology, engineering, and mathematics (STEM) workforce plays a vital role in fostering and sustaining innovation, economic competitiveness, and national security. This workforce currently depends, and for the foreseeable future will depend, on both international and domestic talent. Foreign STEM talent contributes to domestic innovation, economic growth, and U.S. leadership in science and technology and also expands perspectives and networks essential to future scientific collaborations and discoveries.At the request of the U.S. Department of Defense, this reportreviews foreign and domestic talent or incentive programs andtheir corresponding scientific, economic, and national security benefits. International Talent Programs in the Changing Global Environment makes recommendations to improve the effectiveness of U.S. mechanisms for attracting and retaining international students and scholars relative to the programs and incentives other nations use to support national research capabilities, especially in national security and defense-relatedfields.