Most a bit NSFW, so here's the nicest of the lot...

3. A member of the House Democratic Caucus goes to the doctor. The doctor says, “I have bad news and good news. The bad news is you have a broken foot. The good news is, you’re a congressman, which means you have health insurance, which means you’ll be able to get treatment without going totally bankrupt, unlike many of your constituents, who you are actively betraying by thinking only of your electoral prospects. And also,” the doctor continued, “I can’t believe you actually broke your foot by jumping off a bridge just because a Republican told you to. What kind of spineless loser are you? Get out of my office. I can’t stand to look at you.”

http://www.mnftiu.cc/2010/01/21/5-jokes-about-the-apparent-eagerness-of-certain-democratic-members-of-congress-to-abandon-health-care-reform-in-light-of-scott-browns-electoral-victory/

From David Rees, the cartoonist behind such internet classics as Get Your War On, a lampon of the Iraq war, and My New Filing Technique is Unstoppable, lampooning office culture.