Mitigation Actions and Their Effects Progress Towards the 2030 Target As discussed in previous chapters, the United States has made continual progress in implementing policies and measures that have led to emissions reductions. This progress is reflected in the achievement of our 2020 target. A key portion of this mitigation progress can be attributed to, in part, by market transformations and energy use changes driven by both federal and nonfederal policy and measures, primarily across the electricity and transportation sectors. The policies and measure put in place since our 2020 goal was established helped modify long-term trends by accelerating the deployment of clean infrastructure, avoiding the lock-in of fossil fuel infrastructure, speeding the turnover of fossil fuel vehicle and appliance stock, influencing land use decisions and agricultural production practices, and shifting investment and behaviors toward a clean energy, low emissions future.