A day or two later Marshall ruled that the subpœna should issue, holding that neither the personal nor the official character of the President exempted him from the operation of that constitutional clause which guarantees accused persons "compulsory process for obtaining witnesses" in their behalf. The demand made upon the President, said the Chief Justice, by his official duties is not an unremitting one, and, "if it should exist at the time when his attendance on a court is required, it would be sworn on the return of the subpœna and would rather constitute a reason for not obeying the process of the court than a reason against its being issued." Jefferson, however, neither obeyed the writ nor swore anything on its return, though he forwarded some of the papers required to Hay, the district attorney, to be used as the latter might deem best. The President's argument was grounded on the mutual independence of the three departments of Government; and he asked whether the independence of the Executive could long survive "if the smaller courts could bandy him from pillar to post, keep him constantly trudging from North to South and East to West, and withdraw him entirely from his executive duties?" The President had the best of the encounter on all scores. Not only had Marshall forgotten for the nonce the doctrine he himself had stated in Marbury vs. Madison regarding the constitutional discretion of the Executive, but what was worse still, he had forgotten his own discretion on that occasion. He had fully earned his rebuff, but that fact did not appreciably sweeten it.