With number of fatalities at 50, it's the worst such smuggling tragedy in reported US history
                                
                                
                                    (Newser) -
                                    The  discovery of dozens of dead migrants  in a truck in San Antonio, Texas, on Monday is the deadliest such incident in US history, reports the  Washington Post . As of Tuesday morning, the death toll was at 50, per the  AP , but others remained hospitalized. Three suspects are in custody,...