Border is open because it allows NWO gang opportunity to kill two birds with one stone:
In order for NAU - North American Union to become an entity comparable to EU and a reality, they need to change demographics.
They love the ensuing chaos, people are distracted fighting each other (liberal vs. conservative, mexican vs. caucasian, citizen vs immigrants, have vs have-nots), instead of paying attention to why the door has been opened in first place. The worse the chaos gets, better opportunity to strengthen the Govt’s stranghold on power, so they can bring “peace” to the people and “protect” them. If it turns into low grade civil war, then the elites get extra benefit of population reduction.
Immigration can also be used to blame the bankruptcy of the Nation, which is caused by bankers themselves, the cycle of inflation and deflation so they can pick up everything people have built over years with their sweat and blood, with pennies on the dollar.
No one knows who central bankers are and what they look like. Everyone knows what illegal immigrants look like. Get masses to vent against them, while the main culprits stay out of harms way.
None of these problems can be solved individually as they are merely symptom and by-product of the primary problem - the NWO master plan that guides all of these decisions and controlled chaos.
So, all a women has to do is lay her hips across the border and leave her head in Mexico or Canada. If the kids pops out in the USofA then he/she is a citizen!