At least, that is how THEY see it. Illegal immigrants are now suing American property owners when those owners hold them for the cops when they trespass on the property owners' land while illegally entering the country.
I have said for the last two years, that it is only a matter of time before the border conflict between illegals and residents erupts into open warfare. If you think it is bad now, wait until the Mexican government falls, and Mexico slips into anarchy. What do you think the Mexican military units are going to do when they are no longer under the nominal control of the Mexican government?