Joe Lieberman's time has come.

If Lieberman joins Senate Republicans in opposing health care reform, he should be immediately stripped of his seniority, his chairmanship of the Homeland Security Committee, and his other committee memberships. If he threatens to leave the Democratic Caucus and join the GOP, call his bluff, and if he chooses to leave, let him go. It means nothing to have Lieberman's name on a list as Senate Democrat #60 if he is only going to oppose his fellow Democrats and defy his own constituents on every important issue. Health care advocates should contact their Democratic senators now and demand action against Lieberman, and advocacy groups should begin running ads against him in his home state of Connecticut, highlighting the millions of dollars in campaign contributions he has received from the for-profit health and insurance industries while residents of his state have suffered due to lack of health insurance.

While he is not up for re-election until 2012, recent polls in Connecticut have consistently shown low approval and high disapproval ratings for Lieberman, and indicate that if the election were held today he would likely lose. Polls on health care reform meanwhile show that a majority in Connecticut and across America want robust reform including a public option now. A recent Research 2000 poll commissioned by Daily Kos found that 68 percent of likely voters in Connecticut support a public option, while only 21 percent oppose. National polls likewise show that a clear majority support the public option (Boston Globe, Reuters, Washington Post).

MSNBC's Rachel Maddow discussed Lieberman's reasons for defying his constituents and fellow Democrats this week on her show, including not only Lieberman's millions in contributions from the health and insurance industries but also his wife's work for a health care lobbying firm whose clients benefitted from Lieberman's legislation (see also Salon).

Time and time again we have heard from Democrats in Washington: "Joe is with us on everything but the war.... Joe's a good guy.... Good old Joe...." Clearly, good old Joe is with no one but himself and his friends in the health and insurance industries. The fact that Lieberman was willing to tell outright lies about the public option to explain his actions shows the depths of self-serving opportunism to which he has sunk.

Democrats must stop rewarding Lieberman for his treachery, must stop making excuses for him, and must make it clear to him that there will be a high price to pay for standing in the way of health care reform.