A lot of them are families of those that are already in the US.
It is easy to get into Mexico from many different ways from many dangerous countries, and then they cross into the US from the southern border.
That reason alone is why the border should be better regulated.
But, then, there are those others, some of them from what you call "dangerous" countries, others affiliated with gangs and cartels.
which is why we should regulate the southern border and make sure that the dangerous ones don't get here, as well as make it a bit easier on the ones who do just want to come and work, and for whom there actually is work.
If we had a functional government, that's what we would do, no doubt.
Can't we just turn Congress off and then turn it back on again?
I think a better solution would be to take a "mow your neighbor's lawn" approach. At times people end up with a neighbor who has abandoned their home or acts like it and neglects things. The neglected property ends up devaluing other property in the area. Although its a pain, often the wise choice in such cases is to spend a hour every couple of weeks mowing the neglected property's lawn.
I think we need a comprehensive Mexico policy that has as its goal working with Mexico to bring it into the G8 and help make it more "Americanized" for lack of a better word and less third world. Due to the relative proximity to the states, I think it would include business initiatives that created jobs for both Mexicans as well as Americans willing to relocate to Mexico for work. I think we need to insist English language and American history be taught in every grade level of Mexican primary and secondary education. I also think English language American radio and TV should be broadcast in every large and medium city in Mexico under a cultural exchange program. Place select American radio and TV stations in a lottery pool to retransmit their signals into a Mexican city for 5 years. Maybe 2 US radio and TV stations into a sister Mexican city. Then when their people relocate here, and obviously many do, the whole population speaks English, has some knowledge US history and can more easily adapt to American culture.
In time possibly all sides agree to incorporate Mexico into the US, first making their states US territories.
Having opinions all over the map is a good sign of a person capable of autonomous thinking. Felix -2011