Abstract
This paper provides an overview of research issues related to the effects of the growing migration of highly skilled workers on the world economy and economic policy, with special reference to the international mobility of scientists and engineers. It points out U.S. data sets (collected by the National Science Foundation's Division of Science Resources Statistics, other Government agencies, and private organizations) that, along with databases from the Organization for Economic Cooperation and Development and the European Union, may be used to provide at least partial answers to questions prompted by these issues. The paper lays out a theoretically informed road map for the better understanding of these dynamic and far-reaching developments.