Politico's Glenn Thrush makes an intelligent point in a blog post titled, "Isn't it ironic":
Some Democrats have sniped at Joe Lieberman for not grilling the
Bush administration hard enough as head of the homeland security
He gets to keep this job.
Democrats have (mostly) offered praise for his positions on the
Environment and Public Works Committee, where he has criticized the
Bush administration's global warming policies.
He loses that job.