And Mexico has a killer southern border. Mexico is serious about keeping out all people coming from the southern.
Serious except when they pay a sufficient pass-through bribe to ride “the beast” train up north where the free stuff awaits.
Regular mexican citizens can arrest illgals.
The mexican cops beat the living sh1t out of their illegals, take any valuables they have, beat em some more, throw them on a bus, drive them 200 plus miles below the border, and tell them if they come back they’ll kill them.