Professor Richard Revesz’s op-ed on all that is wrong with how EPA Administrator Pruitt has described and is envisioning environmental federalism, i.e. the allocation of power and the role of the states vis-a-vis the federal government on environmental issues.  Really worth a read.

http://www.latimes.com/opinion/op-ed/la-oe-revesz-pruitt-epa-federalism-20170320-story.html