Placing it gently, the one factor that’s assured to discourage aliens are armed psychos within the Minuteman Challenge, uniformed (and armed) Mexican Military, and the armed Border Patrol. This area of the world is outlined by bodily geography, bodily limitations, and human bodily endurance. The reply is “very” no matter the way you wish to body it.
In one other period, this a part of the world as soon as had a menu of worldwide trains that might allow protected transit between Mexico and the US, each for everlasting immigrants and seasonal employees. These trains ended when Mexico privatized it is rail community in 1995. The remaining prepare that goes close to the border (though not over) is certainly one of Amtrak’s lowest preforming routes and is taken into account for elimination each finances cycle. And that is relatively unlucky as Northern Mexico truly had higher trains than the US till they de-electrified. The scenario does not enhance as a result of border states do not think about worldwide transit to Mexico a worthwhile endeavor, since most of them do not beilive in transit anyway.
I’ve skirted round bigger cultural phenomenon that causes this, however on a sensible degree my level is that there isn’t a assured protected floor transportation, and particularly none for these with out papers or individuals who aren’t Mexican residents. So this compels folks to do harmful issues.