The real question is why the need for such a policy to begin with. The current Pope is on record stating that celibacy:
1) Was instituted many centuries after the founding of the Church.
2) Is regarded as a discipline, not a dogma or a doctrine etched into stone.
3) Subject to change.
4) Not universally applied.
I agree.
It is intimately connected with the nature of the Eucharist.
It goes back much farther than most people—including the Pope, apparently—realize.
http://www.canonlaw.info/a_deacons.htm
http://canonlawblog.wordpress.com/2012/11/20/clergy-continence-and-custom/
I have always found it fascinating how exercised so many people can get against a practice that: a) is 100% voluntary for those who do practice it; b) has absolutely no effect on anyone else.