Melville Fuller,
Defiance Water Company v. Defiance…
“ Litigation in the state courts cannot be dragged into the Federal courts at such a stage and in such a way. The proposition is wholly untenable that, before the state courts in which a case is properly pending can proceed to adjudication in the regular and orderly administration of justice, the courts of the United States can be called on to interpose on the ground that the state courts might so decide as to render their final action unconstitutional. ”
