Joseph McKenna, West Side Belt Railroad Company v…
“ When a party asserts that due faith and credit have not been given to a judgment rendered in an action between him and the other party, he asserts a right under the Constitution of the United States, and necessarily this raises a Federal question. This is the assertion in the present case, and the consideration which the supreme court of Pennsylvania give it demonstrates that it is not so far frivolous as to sustain a motion to dismiss. ”
