As a Southern politician Houston was alone in his pro-Union views. What was the root of his deeply held Unionism? What did it cost him to hold on to these views and not compromise his principles? Great-grandson Sam Houston IV, Dr. Mike Campbell, Dr. Gregg Cantrell, Gov. Ann Richards, James Haley, and great-great granddaughter Madge Roberts weigh in on this unyielding position of Sam Houston's.