Cities and states are always looking for ways to more efficiently and effectively deliver public services, such as flood management, resource conservation, pollution prevention, social equity and human health. Green infrastructure is an integrated set of strategies that help realize these outcomes in the built environment through the deployment of design, materials and methods that uses or replicates natural systems. State legislators have powerful opportunities to harness the benefits of green infrastructure through policies and programs that will achieve greater sustainability outcomes through high-performing buildings, infrastructure and landscapes.