Joshua Abraham Norton, known as Emperor Norton, was a citizen of San Francisco, California, who in 1859 proclaimed himself "Norton I, Emperor of the United States" and subsequently "Protector of Mexico"... (wikipedia)
To Mr. Seward: It is my desire that, in case Maximillian will surrender, he be sent here a prisoner of war, but that in the event of his continuing the war, or refusing to surrender, then he be shot.
Now, therefore, the Directors of the company are hereby ordered to see that precautions are taken to make travel on said railroad perfectly safe by using a screw with at least twenty-four inches diameter.
We, Norton I, do hereby decree that the offices of President, Vice President, and Speaker of the House of Representatives are, from and after this date, abolished.
We do hereby command the Leaders of the Hebrew, Catholic and Protestant Churches to sanctify and have us crowned Emperor of the United States and Protector of Mexico.
We further decree that the Senate of the United States elect a prominent Democrat as their presiding officer, to act as President until the next election, and to reconstruct the Cabinet according to our wishes hereafter to be declared.
The Supreme Court of the United States is hereby commanded to try Andrew Johnson for usurpation of our Imperial authority and prerogatives, and if found guilty, behead him or send him here to black the Emperor's boots.