Gay marriage is most probably the biggest threat facing America today, if you discount the increase of arson, assault, blackmail, bribery, burglary, child abuse, conspiracy, forgery, fraud, genocide, homicide, kidnapping, mugging, murder, rape, robbery, smuggling, treason, and trespassing that is.
Because banning gay marriage is primarily based on their lack of being able to procreate, I suggest a decree (or someday, an amendment, maybe) that states that straight couples that are married will be required to have children within X amount of years. After all, this is to protect the children.
And we shall call this movement, the one against the gays, “War of the Lavenders”, and those historically savvy will have a good laugh at the pun on the "War of the Roses".
In the wise words of Stephen Colbert “Consider this: who, other than terrorists, wants to destroy our [America's] way of life? The Gays. Allowing them [the gays] to marry would be like strapping on a suicide vest with a matching cummerbund”.