A growing number of married American couples are agreeing to allow husbands to keep their wives 'in line' by taking to corporal punishment. The trend is called Christian Domestic Discipline and much of what is known about the practice is published on the website Learning Domestic Discipline, published by husband and wife CDD duo, Clint and Chelsea. The website states: 'It is an arrangement between two adults who share the belief that the husband is the head of the household and with that position comes the right to enforce his authority.' Clint and Chelsea have also written a 50-page packet...