Much of the discussion around digital infrastructure has focused on broadband availability (which is certainly important), but the role of free and open source software (FOSS or OSS) has gone underappreciated. FOSS—software whose source code is public, is often created by decentralized volunteers, and can be freely used and modified by anyone—has come to play a vital role in the modern economy. I present 11 policy proposals separated into four domains of focus: creating an open source program office; measuring and understanding the FOSS ecosystem; enhancing the positive economic impact of FOSS; and securing the FOSS ecosystem. Although there is no silver bullet for guaranteeing the future health and growth of FOSS, these proposals will go a long way towards ensuring FOSS can continue to play its essential role in enabling the modern U.S. economy to grow and flourish.