Felix Frankfurter,
O'Malley v. Woodrough/Opinion of the Court…
“ Is it not therefore morally certain that the discerning statesmen who framed the Constitution and were so sedulously bent on securing the independence of the judiciary intended to protect the compensation of the judges from assault and diminution in the name or form of a tax? Could not the purpose of the prohibition be wholly thwarted if this avenue of attack were left open? Certainly there is nothing in the words of the prohibition indicating that it is directed against one legislative power and not another ”
