WASHINGTON: At least 46 migrants were found dead Monday in and around a tractor-trailer that was abandoned on the roadside on the outskirts of the Texas city of San Antonio. The grim discovery was one of the worst disasters involving migrants in the United States in recent years — and came five years after a similar deadly incident in the same central Texas city, a few hours from the Mexican border. “At this time we have processed approximately 46 bodies that have been triaged and tagged and declared deceased,” San Antonio Fire Chief Charles Hood told reporters. He said that 16 people had been…