LOS ANGELES - Marie Osmond said her 16-year-old son has entered a rehabilitation facility, but she didn't disclose the nature of his problem. "My son, Michael, is an amazing young man, shown through his courage in facing his issues. As his mother I couldn't be more proud of him," the 48-year-old singer said in a statement issued Wednesday through her publicist, Marleah Leslie. "The press and public have always been kind and gracious in the past and I know they will continue to respect our privacy during this time," Osmond said. The statement was first reported by TV show "Entertainment...