The door to your home shop or building is to keep out intruders! The borders to your nation is to keep out invaders ! Be they legal or ILLEGAL !
" Enter by invitation only " GOT IT ?
If you trespass you go to jail or to the cemetery take your pick ! If you cant hold it, it ain't yours!!!
Ask the American Indian, The same will happen here if you don't have balls or backbone // + lots of AMMO ! :>) Uncle Joe; The Elder ;