Under most federal environmental laws and some health and safety laws, states may apply for quot;primacy,quot; that is, authority to implement and enforce federal law, through a process known as quot;authorization.quot; Some observers fear that states use authorization to adopt more lax policies...

In recent years, cases in which state governments chose to override federal environmental regulation with tighter regulations of their own have become increasingly common, even for pollutants that have substantial spillovers across states. This paper argues that this change arose at least in...

Fourteen U.S. states recently pledged to adopt limits on greenhouse gases (GHGs) per mile of light-duty automobiles. Previous analyses predicted this action would significantly reduce emissions from new cars in these states, but ignored possible offsetting emissions increases from policy-induced...

This paper tests whether differences across states in pollution regulation affect the location of manufacturing activity in the U.S. Plant-level data from the Census Bureau's Longitudinal Research Database is used to identify new plant births in each state over the 1963-1987 period. This is...

Most US federal environmental policies allow states to assume responsibility for implementation and enforcement of regulations; states with this responsibility are referred to as "authorized'' or having "primacy.'' Although such decentralization may have benefits, it may also have costs with...

Federal action addressing climate change is likely to emerge either through new legislation or via the U.S. EPA's authority under the Clean Air Act. The prospect of federal action raises important questions regarding the interconnections between federal efforts and state-level climate policy...

The U.S. Constitution removed real and monetary trade barriers between the states. By contrast, these states when they were British colonies exercised considerable real and monetary autonomy over their borders. Purchasing power parity is used to measure how much economic integration between the...

This paper evaluates the effect of U.S. state corporate income taxes on union wages. American workers who belong to unions are paid more than their non-union counterparts, and this difference is greater in low-tax locations, reflecting that unions and employers share tax savings associated with...

We present a model where heterogeneous districts choose both whether to experiment and the policies to experiment with. Since districts learn from each other, the first-best requires that policy experiments converge so that innovations are useful also for neighbors. However, the equilibrium...