Better say it in gigantic letters. PLAN B DOES NOT PREVENT CONCEPTION!
Gah! Implantation! Not contraception! Bad me! Serves me right for posting in a hurry.
From the FDA:
Plan B works like other birth control pills to prevent pregnancy. Plan B acts primarily by stopping the release of an egg from the ovary (ovulation). It may prevent the union of sperm and egg (fertilization). If fertilization does occur, Plan B may prevent a fertilized egg from attaching to the womb (implantation). If a fertilized egg is implanted prior to taking Plan B, Plan B will not work.
This pill does nothing more than normal every day oral contraceptives do to prevent pregnancies. If you are 'OK' with birth control pills then there should be no objection to this method, which is already legally available.
If you are opposed to all forms of contraception then please, rant-on. But please, take the time to know the facts before you do so.