Answer: Lowering the age of consent to 12; legalization of all narcotics; bestiality; widespread infanticide; total legalization of suicide and doctor induced death on demand; polygamy and polyandry will be some of the vices allowed.
Assisted suicide is will be legal throughout the nation very soon unless something drastic happens.
The federal government has all but publicly declared that states can legalize marijuana if they want (and by the same standard ALL other drugs will eventually be legalized), and those states that don't legalize it will soon realize how much tax revenue they're missing out on.
And polygamy is far more justifiable from a historical viewpoint than same-sex marriage.