Melville Fuller,
Cooke v. Avery — Opinion of the Court
“ Clearly, the right of a plaintiff to sue cannot depend upon the defense which a defendant may choose to set up, and as on the first trial defendants relied on the decision of a federal question to defeat the action, such a concession of the existence of a federal ingredient in the cause might fairly be held to bind them when they subsequently abandon it, and seek to oust the jurisdiction upon the ground that there could be no real dispute as to the applicable law. ”
