Disallow any government recognition for any changes to the simple, age-old definition of "Marriage" and/or "Matrimony".

There is a "silent-majority" in America that is fed-up with the endless tampering with the sanctity and/or morality of marriage.
We find it offensive that the terms "marriage" or "matrimony" should be anything else than a union between a man and a woman.
Whatever "partnership" or "union" the government does recognize should not change, or interfere with, the simple meaning of "marriage". It always has been, and should remain, consisting exclusively of only a husband and a wife. This should be considered inviolable.
Any other form of relationship should not officially be considered a marriage, or referred to as such, by the Federal government, in policy or on any official documents.