We show that imposition of a state-level environmental tax in a federation crowds out preexisting federal taxes. We explain how this vertical fiscal externality can lead unilateral statelevel environmental policy to generate a welfare gain in the implementing state, at the expense of other...

Embodied carbon tariffs tax the direct and indirect carbon emissions embodied in trade — an idea popularized by countries seeking to extend the reach of domestic carbon regulations. We investigate their effectiveness using simulations from an applied general equilibrium model of global trade...