Leaders in Washington are seeking ways to stabilize the health care system and lower premiums next year. Deep divisions have so far stood in the way of action. But there is one bipartisan opportunity yet to be tapped: delaying the health insurance tax. The HIT, which was included in the Affordable Care Act, was found to have disastrous effects. The tax directly raises health insurance premiums for small businesses, individual enrollees, and senior citizens on Medicare Advantage — in other words, tens of thousands of constituents in my district and across Maine. The HIT even affects our state coffers with…