Yglesias is right that there should be swift and painful retaliation against any Democrat who supports the plan to end social security under the banner of "bipartisanship." If, as he suggets, Joe Lieberman is just the man for this job, I hope others will join me in devoting our resources to the support of a credible primary challenger in 2006.
...to be clear, there are two issues here. One is Dem support for this monstrosity - obviously that's bad enough. But, the other issue is supporting it in a way which allows for the perpetuation of the idea that this is a truly "bipartisan" agenda, and that support for it is the "bipartisan" thing to do.