(CBS) — They came to the United States for medical treatment for their son, but a French family is now stranded in Chicago because the airline that brought them here won’t take them back. CBS 2′s Derrick Blakley has the story of this foreign family’s travel troubles. 22-year-old Kevin Chenais weighs 500 pounds and spent a year-and-a-half at the Mayo Clinic for treatment of a hormone disorder. He was supposed to fly home to France on British Airways, but for seven days, he and his family have been stranded in Chicago. “We blame British Airways because now they just leave us, and they brought us here,” said Christina Chenais, Kevin’s mother. When it was time to go back, British Airways essentially decided, Kevin was too large to fit on board. More here.