@alexc It's citizens that bring those Guns into Mexico. It's legal to do so until they've crossed into Mexico. So in theory if we see you on the US side of the border heading into Mexico with a nominally legal weapon, we're not suppose to stop you.
Trump essentially promised that this would change. Which is a pretty big deal as that's how a lot of guns come into Mexico for the Cartels.
@alexc To cross the border with a gun?