"I want to ask the president, why did he kill my son?" Sheehan told reporters. "He said my son died in a noble cause, and I want to ask him what that noble cause is." Sheehan said hers was one of a group of about 15 families who each met separately with the president one day last June. "He wouldn’t look at the pictures of Casey. He didn’t even know Casey’s name," she told CNN Sunday. "Every time we tried to talk about Casey and how much we missed him, he would change the subject." Sheehan said she was so distraught at the time that she failed to ask the questions she now wants answered. "I want him to honor my son by bringing the troops home immediately," Sheehan told reporters Saturday. "I don’t want him to use my son’s name or my name to justify any more killing."