Earlier research revealed a dramatic increase in the contributions of foreign nationals to U.S. intellectual property over an eight-year period. In this paper, we offer a more refined measure of this change and seek to explain this increase with an analysis of the immigrant-visa backlog for skilled workers. The key finding is that there are over one million skilled workers and their families who are in the U.S. awaiting permanent resident visas. This number is significantly larger than the number that can be admitted to the United States. This imbalance creates the potential for a sizeable reverse brain-drain from the United States to the skilled workers’ home countries.