It used to be said that religion and politics don't mix. Some say it's time the Right and the Left made that the conventional wisdom again. Churches are mixing God with politics and losing their way, according to Kathleen Kennedy Townsend. The oldest daughter of Robert F. Kennedy has a new book called Failing America's Faithful, alleging that churches on the right and the left have abandoned their true mission. Join Regina Brett as she talks to the author and others about God and politics Friday morning on The Sound of Ideas.