The Walker family owns the largest ranch in the country, one that has been in the family for generations. Russell and Richard Walker, twin brothers, were left as co-owners of the family legacy. Richard wasn't cut out for ranching life and wound up being a Senator for the state of Texas at the age of 40 and still holds the seat.Russell is, for all practical purposes, the patriarch of the family, the glue that holds it together. His five children, now...