No Congress ever has seen fit to amend the Constitution to address any issue related to marriage. No Constitutional Amendment was needed to ban polygamy or bigamy nor was a Constitutional Amendment needed to set a uniform age of majority to ban child marriages.
Tolerance is a one-way street in the Age of Obama. 'Choice' is in the eye (and iron fist) of the First Amendment usurper.
Statutes authorizing unreasonable searches were the core concern of the framers of the 4th Amendment.