U.S. Immigration and Customs Enforcement

Immigrant deaths in tractor-trailer highlight danger of heat

Experts say the temperature inside of the tractor-trailer where smuggled immigrants died and many others were left in dire health would have quickly become unbearable in the Texas heat.

Authorities said they found more than three dozen people, including nine who were dead, in the truck's trailer after an employee at the San Antonio Walmart where it was parked overnight called the police. One later died at a hospital. San Antonio Fire Chief Charles Hood said Saturday that the trailer didn't have a working air conditioning system and the victims "were very hot to the touch."

Thomas Homan, acting director of U.S. Immigration and Customs Enforcement, told The...