As for the constitutionality of such a law, the federal Constitution sets out certain basic eligibility requirements for President, but states can and do impose a variety of restrictions on who may be on the ballot in that state -- e.g., by regulations on the selection process by parties and signature requirements for independent candidates -- and states have "plenary" power over the "manner" of appointing their own electors. For instance, states can exclude faithless electors. Thus I conclude that a state law requiring its electors to vote only for presidential candidates who have released their tax returns should be constitutional, as do Laurence Tribe, Richard Painter and Norm Eisen. And I conclude that our federalism-friendly Chief Justice should agree that such a law is constitutional. And if he doesn't, we shall all have a talk with him.