uscode.house.gov

b6rvZ TIL that the Guano Islands Act enables any American citizen to annex unclaimed islands containing seabird/bat excrement (guano) in the name of the United States (at the discretion of the President)
X0mnP TIL immigrants in the United States are legally required to carry their green card or other immigration papers "at all times"
epAlL TIL that commercial fishing used to deliberately surround, trap and drown dolphins that would get in the way of the tuna which led to a government act to protect and label tuna caught without harming dolphins as “dolphin safe” tuna.