How bout this for starters.
#1 It's broke, and will cripple the US Treasury and your childrens earning potential in the future.
#2 Reagan tried to work to fix it and was thwarted by an opposition congress.
#3 Clinton didn't try to fix it even when he had a supportive congress.
#4 This is probably the last chance to fix it before it's too late. Rather than just "opposing" in on Democrat party principle because it's not their guy fixing it. Work with your Senators and Congressmen to actually get in there and work to FIX THE DAMN THING.
That's the best argument for it that I know of. I don't really care HOW or WHO fixes it, I just want it fixed or scrapped totally.
--Jason
http://www.jasoncoleman.com