Harlan F. Stone,
Milwaukee County v. M. E. White Company…
“ We can perceive no greater possibility of embarrassment in litigating the validity of a judgment for taxes and enforcing it than any other for the payment of money. The very purpose of the full-faith and credit clause was to alter the status of the several states as independent foreign sovereignties, each free to ignore obligations created under the laws or by the judicial proceedings of the others, and to make them integral parts of a single nation throughout which a remedy upon a just obligation might be demanded as of right, irrespective of the state of its origin. ”
