States that embraced the Affordable Care Act and created health care exchanges were supposed to lead the way in enrolling their residents in health insurance, but some of them are responsible for the federal government falling behind in its projections. Only 18 days remain before the March 31 enrollment deadline, and the government is about 1.8 million behind its goal of 6 million new health insurance customers. That's because states such as Hawaii, Maryland and Oregon, all run by Democratic governors and legislatures supportive of the law, have had their exchanges falter and at times collapse.