The Wall Street Journal reports Joe Lieberman is digging in his heels. He will filibuster any health care legislation that contains a public option, even if the legislation allows states to opt-out.Lieberman has been a thorn in the side of the left ever since they decided to challenge him back in 2006. In that year, the left beat Lieberman in the Connecticut Democrat Primary. Lieberman decided to stay in as an independent in the general election and won. With a number of his long time Senate friends endorsing the Democrat in 2006 because the man had a “D” next to his name, Lieberman has been his own man ever since.Lieberman retains his Senate committee chairmanship and the privileges of being a Democrat member of the Senate. That may change soon as Harry Reid is staking his reputation on passage of the health care legislation.