Aaron Burr, former Vice President of the United States and the guy who killed Alexander Hamilton in a duel, was preparing to invade Mexico (New Spain at the time), and then annex Texas and a bunch of other Southwestern territories in an attempt to form his own empire to rival the United States.
This was all after he was essentially blackballed from U.S. politics in the early 19th century when he killed Hamilton in the illegal duel.
It is well enough that people of the nation do not understand our banking and monetary system, for if they did, I believe there would be a revolution before tomorrow morning.
Henry Ford