A Constitutional Amendment to Define Marriage?

Here is the complete version of my response which was excerpted in the Cleveland Plain Dealer on Saturday:

Constitutional Amendments have historically extended human rights, not curtailed them. The last movement to restrict individual liberty--the 18th Amendment which brought on Prohibition--was a disaster. An Amendment limiting the definition of Marriage would do the same and brand the United States as a repressive society among the civilized world. The United States is not a theocracy and should not make laws based on religious principles, period.