Because everybody who can run, jump and swim are already in the U.S.
Do they follow territorial boundaries? If the Kaos Kommandos start a brawl in El Paso and it rolls over into Juarez, do they say "screw it, let Justice League of Mexico handle it"? (Sorry if this isn't technically a joke; it was my shower thought this morning and I thought it was funny.)
Guacamole, sour cream, and salsa.
Hamburger!
Because he doesn't do cardio.
They defend the ship with way more enthusiasm.
Dam!
Because they are excellent at waging Gorilla warfare!
Bombs
The cow jumped over the moon.
Mourning, everybody!
Because the ones who can run, jump and swim are already in the U.S
Because all those who can run, jump, or swim are already in the US.
