Sen. Joe Lieberman (I-Conn.) said Tuesday that he'd back a GOP filibuster of Senate Majority Leader Harry Reid's health care reform bill. Lieberman, who caucuses with Democrats and is positioning himself as a fiscal hawk on the issue, said he opposes any health care bill that includes a government-run insurance program -- even if it includes a provision allowing states to opt out of the program, as Reid's has said the Senate bill will.