The Obama health care plan would greatly increase health insurance coverage, substantially increase access to affordable and adequate coverage for those with the highest health care needs, significantly increase the affordability of care for the low-income, and reduce the growth in health spending through a broad array of strategies. Despite the overall positive assessment, a few concerns remain.The plan would leave about 6 percent uninsured, necessitating the maintenance of the current inefficient safety net system; the employer mandate may engender significant political opposition; and the cost estimate may be somewhat low depending upon how some plan details are resolved.