"Show me just what Mohammed brought that was new, and there you will find things only evil and inhuman, such as his command to spread by the sword the faith he preached." - Manuel II Palelologus
I'm no legal scholar but doesn't the US Constitution prohibit ex post facto laws? If that's true then there's no was you can invalidate,within the state of California,"marriages" that occurred between the time when they were declared legal by the CA Supreme Court and the day that Prop 8 passed.