Aaron Burr had contacted the Spanish minister, Carlos Martínez de Irujo y Tacón, in early 1806 and told him that his plan is not just western succession, but the capture of Washington.

Irujo had written to his masters in Madrid about the coming "dismemberment of the colossal power which was growing at the very gates" of New Spain. (Melton, Buckner, Aaron Burr, Conspiracy to Treason, 2002)

Irujo had given Burr a few thousand dollars to get things started.

The Spanish government in Madrid takes no action.

Jo Daviess, United States District Attorney for Kentucky, writes Jefferson several letters in February and March 1806, warning him of possible conspiratorial activities by Burr.

Jefferson dismisses Daveiss’ accusations against Burr, a Democratic-Republican, as politically motivated.

In the spring of 1806, Burr has his final meeting with Anthony Merry, Britain's representative to the United States in Washington, D.C. from 1803.

In this meeting Merry informs Burr that still no response has been received from London.

Burr tells Merry, "with or without such support it certainly would be made very shortly." (Melton, Buckner, Aaron Burr, Conspiracy to Treason, 2002).