Re: divorce, a state senator in PA (Vince Fumo, not usually my favorite Philly politician) used an excellent tactic a month ago. He proposed an amendment to an anti-marriage amendment that would also ban no-cause divorce (and generally, divorce in all but a few circumstances). While obviously that amendment would have failed, it would have needed to be debated, and the right-wingers pushing the main marriage amendment were not really interested in standing up in the state house and arguing that divorce was less of a threat to marriage than gay marriage; last I heard, the original amendment died without a vote.

http://www.fumo.com/Press_Releases/GayMarriageDivorce5-6-08.htm (the last sentence is priceless)

(See also http://www.fumo.com/Press_Releases/GayFamilyRally5-5-08.htm . "Today, we are all homosexuals. You, me, every legislator, every staff member, every visitor to this Capitol, is gay. Because we are all Americans.")