The legislative of any state can basically write a law saying "this project is exempt from review". This isn't a complicated problem like interstate water rights with American Indian treaty obligations.
Does US not have compulsory purchase process for infrastructure projects? Here in UK if there is a need to run transmision lines or whatever, the government will just compulsory purchase the land needed, you will be paid the market price for the land but you have to sell it.
Gosh, why didn't state "legislatives" think of "exempting from review" interstate power grid construction projects? That'll totally help with all the federal environmental regulations and power transmission regulations. And who knew that "legislatives" could just bypass any state laws they want?
You're like a walking, talking poster child for Dunning-Kruger.