Sheldon Whitehouse actually said...

We need the EPA to be defending us against the coal plants that are downwind that have dodged regulation for years.

If a State wished to step in, it could engage under these rules to reduce carbon in ways beyond simply what including plants could do.

When you look at the economic effects, do you look broadly at the economic effects with concern on the one hand there may be some increases ...

They shouldn't both stop negotiations in Congress and then tell you that you shouldn't act until Congress has taken this up.