It isn’t poor Mexican workers that are trying to take our freedoms away. Poor Mexican workers aren’t going to send your children to die in unending Middle Eastern wars, spy on your email, or disappear you to some foreign CIA prison. Every libertarian knows where the real enemy is (hint: think "Potomac" instead of "Rio Grande"). If it scares you too much to face it, don’t take it out on Juan or Pedro. You may be wading the Rio Grande yourself on your way south ten years from now.