Science is increasingly a global endeavor. “Brain circulation”—visiting, studying, and working in another country and attending international meetings—are essential to the way science operates today. Too often, however, foreign students and scientists seeking to come to the U.S. confront outdated immigration and visa policies that complicate lives and research plans and ultimately damage the reputation and progress of U.S. science. Especially since 9/11, instead of welcoming foreign scientists and STEM students, the U.S. system frequently treats them as potential threats. In addition, immigration policies often require that students who receive advanced degrees in the U.S. must return to their home countries before accepting employment. Other policies place quotas on the number of foreign scientists and engineers that the U.S. allows into the country in a given year. In view of the global competition for technical talent, it is not evident that such policies, which may have made sense in an earlier age, serve the best interests of the country today. The symposium focuses on solutions to the problems of visa and immigration policies affecting scientists and STEM students. A group of scholars and policymakers will examine various approaches to making these policies consistent with the changing needs of U.S. and global science, and their presentations will be followed by an interactive discussion with attendees.