Whenever any citizen of the United States discovers a deposit of guano on any island, rock, or key, not within the lawful jurisdiction of any other Government, and not occupied by the citizens of any other Government, and takes peaceable possession thereof, and occupies the same, such island, rock, or key may, at the discretion of the President, be considered as appertaining to the United States.
— first section of Guano Islands Act
Also, WHY would the poop have anything to do with this?
No really this is load of made up-ness to rustle yalls jimmies
— first section of Guano Islands Act