NEWSImmigrants found dead in hot Texas semi-trailerA couple visits a make-shift memorial in the parking lot of a Walmart store on July 24, 2017, near the site where authorities Sunday discovered a tractor-trailer packed with immigrants outside a Walmart in San Antonio. Several people died and others hospitalized after being crammed into a sweltering tractor-trailer in the midsummer Texas heat, according to authorities in what they described as an immigrant-smuggling attempt gone wrong.Eric Gay, APA bottle of water, flowers, candles, and stuffed animals help form a makeshift memorial in the parking lot of a Walmart store in San Antonio, July 24, 2017.Eric Gay, APShoppers pass a group visiting a make-shift memorial in the parking lot of a Walmart store in San Antonio, July 24, 2017.Eric Gay, APFlowers, candles, and stuffed animals help form a makeshift memorial in the parking lot of a Walmart store near the site where authorities Sunday discovered a tractor-trailer packed with immigrants in San Antonio, July 24, 2017.Eric Gay, APJames Mathew Bradley Jr., left, arrives at the federal courthouse for a hearing, July 24, 2017, in San Antonio. Bradley was arrested in connection with the deaths of multiple people packed into a broiling tractor-trailer.Eric Gay, APMia Gonzalez holds a flower and artificial candle as she takes part in a vigil at San Fernando Cathedral for victims who died as a result of being transported in a tractor-trailer, July 23, 2017, in San Antonio.Eric Gay, APEldia Contreras wipes away a tear as she takes part in a vigil at San Fernando Cathedral for victims who died as a result of being transported in a tractor-trailer, July 23, 2017, in San Antonio.Eric Gay, APSan Antonio police officers investigate the scene where multiple people were found dead in a tractor-trailer loaded with at least 30 others outside a Walmart store in stifling summer heat in what police are calling a horrific human trafficking case, July 23, 2017, in San Antonio.Eric Gay, APA tractor-trailer is pulled from the scene where San Antonio police say multiple people were found dead in the trailer.Eric Gay, APEvidence is collected at the scene where multiple people were found dead in a tractor-trailer in San Antonio.Eric Gay, APSan Antonio police officers investigate the scene where multiple people were found dead in a tractor-trailer loaded with at least 30 others outside a Walmart store in stifling summer heat in what police are calling a horrific human trafficking case on July 23, 2017, in San Antonio.Eric Gay, APA truck that contained dozens of suspected immigrants, several of whom died, is towed from the scene in San Antonio.Darren Abate, European Pressphoto AgencySan Antonio police officers investigate the scene where multiple people were found dead in a tractor-trailer loaded with at least 30 others outside a Walmart store in stifling summer heat in San Antonio.Eric Gay, APA truck that contained dozens of suspected immigrants, several of whom died, is towed from the scene in San Antonio.Darren Abate, European Pressphoto AgencyA hearse sits in the parking lot of a Walmart store where multiple people were found dead in San Antonio.Eric Gay, AP