Big cases before Iowa's high court

Some high-profile cases will be heard by the Iowa Supreme Court on Thursday.  A challenge to the state's voter ID law goes before the justices after parts of it were temporarily blocked last month.  A traffic camera case involving the city of Des Moines will also be argued.  A class-action lawsuit was filed as the plaintiffs said their due process rights were violated by the cameras and how they were prosecuted for the ensuing tickets.