ThesunbeatsdownmercilesslyonallthosewhocrosstheSonoranDesertbetweenMexicoandtheUnitedStates.Asidefromthefewpeoplewholivehere,it’sthepoorestofundocumentedimmigrantsthatmakethecrossing,whohavenochoicebuttotakethisextremelydangerousroute,followedbyborderguardsbothofficialandself-appointed.Thehor...