The Supreme Court ruled today that states can keep violent sexual predators locked up after they serve their prison sentences even if they are not mentally ill. The 5 to 4 decision came in the case of an admitted pedophile from Kansas. The justices said such people can be held if they are considered mentally abnormal and are likely to commit new crimes. The court ruled such confinement - intended to protect society - does not violate the constitutional right to due process and is not double punishment for the same crime. NPR's Chitra Ragavan reports.