Plumer notes in his diary that during the winter of 1804, at a dinner given in Washington attended by himself, Pickering, Hillhouse, Burr, and other public men, Hillhouse "unequivocally declared that ... the United States would soon form two distinct and separate governments."[771] More than nine months before, certain of the most distinguished New England Federalists had gone to the extreme length of laying their object of national dismemberment before the British Minister, Anthony Merry, and had asked and received his promise to aid them in their project of secession.[772]
There was nothing new in the idea of dismembering the Union. Indeed, no one subject was more familiar to all parts of the country. Since before the adoption of the Constitution, it had been rife in the settlements west of the Alleghanies.[773] The very year the National Government was organized under the Constitution, the settlers beyond the Alleghanies were much inclined to withdraw from the Union because the Mississippi River had not been secured to them.[774] For many years this disunion sentiment grew in strength. When, however, the Louisiana Purchase gave the pioneers on the Ohio and the Mississippi a free water-way to the Gulf and the markets of the world, the Western secessionist tendency disappeared. But after the happy accident that bestowed upon us most of the great West as well as the mouth of the Mississippi, there was in the Eastern States a widely accepted opinion that this very fact made necessary the partitioning of the Republic.
Even Jefferson, as late as 1803, did not think that outcome unlikely, and he was prepared to accept it with his blessing: "If they see their interest in separation, why should we take sides with our Atlantic rather than our Mississippi descendants? It is the elder and the younger brother differing. God bless them both, and keep them in union, if it be for their good, but separate them, if it be better."[775]
Neither Spain nor Great Britain had ever given over the hope of dividing the young Republic and of acquiring for themselves portions of its territory. The Spanish especially had been active and unceasing in their intrigues to this end, their efforts being directed, of course, to the acquisition of the lands adjacent to them and bordering on the Mississippi and the Ohio.[776] In this work more than one American was in their pay. Chief of these Spanish agents was James Wilkinson, who had been a pensioner of Spain from 1787,[777] and so continued until at least 1807, the bribe money coming into his hands for several years after he had been placed in command of the armies of the United States.[778]