The nation's largest health insurers are far from leaping at the chance to join new state health insurance exchanges under President Barack Obama's reform law, making it likely that some markets will have little or no competition next year. These new insurance marketplaces are due to open their doors on October 1 to enroll millions of Americans who have not been able to buy coverage on their own. A key principle of Obama's health reform is that individuals will have a robust offering of insurance plans to choose from, and that competition for new customers in each state will help keep prices down for consumers.
