[longtermmemmory]

The constitution was used to impose the voting age of 18.

The constitution was used to impose the abolition of slavery.

The constitution was used to impose ...

So in answer your question, yes they can and should.

You should not that this only takes the federal questions out of the issue. mass can do whatever it wants within its own borders. It is just that states like vermont can not impose their view on homosexual union on texas.

[hunter112]

Both of the amendments you cite were used to expand the definition of freedom. Other than the Amendment providing for Prohibition, when has a Constitutional Amendment been used to restrict the freedom of individuals? You can argue that a gay couple living across the street from you with a Massachusetts marriage certificate violates your freedom, but right now, that couple is convincing more people that NOT being able to have the certificate is more violative of their freedom. Either way, you and your spouse will still be married.