Rikki gets it right:

The U.S. Fourth District overturned a federal indictment against TVA because it claimed nuisance laws, rather than decade-old Clean Air Act deadlines constituted the force of North Carolina's argument. The court said "the injunction would encourage courts to use vague public nuisance standards to scuttle the nation's carefully created" clean-air laws, so TVA need not obey those carefully created laws. Such logic is the hallmark of corporate ownership of government.

Link...