ST. LOUIS (AP) Mark McGwire was so popular in St. Louis after his 70-homer season in 1998 that a stretch of Interstate 70 was named after him. Now, a St. Louis congressman who was part of the House Government Reform Committee says McGwire's name should be removed from the highway over his refusal to say if he used performance enhancers. William Lacy Clay says he was disappointed in McGwire's testimony yesterday. He says baseball fans want to know if McGwire was using steroids when he set the home run record. In 1999, a five-mile stretch of I-70 through St. Louis...