WASHINGTON (AP) — A hectic sign-up season is winding down for President Barack Obama's health care law.

So where do things stand?

With more than 6 million enrolled, so-called Obamacare has managed to change the country. Americans are unlikely to return to a time when people with medical problems could be denied coverage.

But other major parts of the Affordable Care Act face an uncertain future.

New insurance markets created by the law are anything but consumer friendly. The administration can't afford to fumble open enrollment next year. But what if premiums jump?

Nearly half the states are still opposed to or undecided about the law's expansion of Medicaid for the poor.

Requirements that medium- to large-sized employers offer affordable coverage are just over the horizon. That will stir up more opposition.