The bulk of the decisions which drive U.S. climate action in the aggregate are made by cities, states, businesses, and civil society. The federal role, ideally, is to coordinate and support those efforts. In the absence of a supportive federal coordinating role, these actors will more closely coordinate their own decarbonization actions. Collectively, they will redouble their efforts to ensure that the U.S. achieves the carbon emissions reductions it pledged under the Paris Agreement.