Someone over at http://LoathingLieberman.com is on to something huge.
From recently uncovered photographic evidence, it appears that Joe Lieberman and ALF were separated at birth. Here is the photo that seems to clearly prove it.
While the much more attractive twin went on to a successful career in a popular television series, the other twin was bought off by hundreds of thousands of dollars of insurance industry money and successfully scuttled real health insurance reform in late 2009.