This study brings together four U.S. modeling teams to show that an expanded set of federal and state policies beyond current policies could achieve economy-wide emissions reductions of 56-67 percent below 2005 levels by 2035. By contrast, current policies result in 34-44 percent reductions. These potential policies significantly close the gap relative to the official U.S. pledge. They also imply 2-4 times increase in renewable capacity additions, 73-100 percent reduction in electricity generation from unabated fossil fuels, and 83-100 percent share of electric vehicles in new vehicles sales.