If the US had the resolve to address the issue correctly, they would station troops and equipment on the border and try to increase deaths in the desert. Why should we concern ourselves with preventing exposure and dehydration of mexicans sneaking into the country? If they want to risk it and die in the process...how is the US legally or morally responsible for this?    Kind of like being required to install safety glass on the windows of your house so the burglar doesn't cut his hands when breaking in.