They tend to keep to their own, however I do know some. I was even partners with one years ago, broke him into the trade. I have worked on high rise jobs and large multi-dwelling apt/condo buildings with crews up to 150 people which were 95 % from south of the border. I think I have a pretty fair grasp on where they're coming from.
And we sacrifice thousands in the name of 'making the world safe for democracy'. But that being said, yes, let them take it back. And the shitty truth is they will because we've been neutered to the point that they can.