Stephen Johnson Field,
Virginia v. Tennessee (148 U.S. 503…
“ The constitution does not state when the consent of congress shall be given, whether it shall precede or may follow the compact made, or whether it shall be express or may be implied. In many cases the consent will usually precede the compact or agreement, as where it is to lay a duty of tonnage, to keep troops or ships of war in time of peace, or to engage in war. But where the agreement relates to a matter which could not well be considered until its nature is fully developed, it is not perceived why the consent may not be subsequently given. ”
