Over eight years and three presidential administrations, I served as Project Lead for the federal government's design system, USWDS, helping it grow from a recently-released 1.0 product to a stable, mature, and trustworthy open source tool at the cusp of its fourth major version. I lead the team through a period of significant transition, designing and building the USWDS website, developing its strategy, hiring staff and structuring contracts, and working to grow a community of practioners around shared principles and the values of human centered design. We developed a strong commitment to working in the open. We managed the product in GitHub, produced hourlong monthly public presentions, and delivered regular releases to the codebase. Our commitment to accessibility is resulting in services that reduce the barriers to participation across the federal government, and is a model for state, local, and tribal governments, as well as the private sector. Typefaces: Public Sans, Source Sans Pro, Merriweather, Roboto Mono