What the military can and cannot do at the border
President Trump walked back comments on Friday about the military engaging with migrants who throw rocks at them, saying there aren't plans to fire at people at the border, instead to arrest them.
The big picture: What Trump originally said about the military considering rocks "a firearm because there's not much difference," prompted backlash and questioning regarding the military's authorized use of force in similar situations. The military's rules allow its members to act in self-defense, but typically "proportional" to the hostility they're facing.
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