President Obama

House Republicans have been threatening to sue President Obama over executive actions he's taken on the Affordable Care Act. Today, they pulled the trigger.

The second open enrollment period at HealthCare.gov began Saturday. The website is better than last year's version, but approval of the Affordable Care Act remains low.

Open enrollment in Obamacare resumes Saturday. While no one expects a repeat of last year's disastrous launch, millions of people will be trying to renew coverage or sign up for the first time.

After a launch that failed last fall, the administration is hoping this year's open enrollment period goes more smoothly, by letting customers browse first.

In his first news conference since an overwhelming victory for Republicans on Tuesday, the House speaker also said approval of the Keystone XL pipeline is a key item on the GOP agenda.

"We begin this week with a ramp-up of the American response to the Ebola virus epidemic in West Africa. Calling it a threat to global security, President…

The president warned that the U.S. alone could not halt the epidemic and that without more help to stop the disease, hundreds of thousands of people could die.

The ambitious scope of the intervention has impressed aid workers, who have been crying for help for months. But the plan will need to be implemented quickly to get ahead of the spread of infections.

The president is expected to announce a new U.S. effort to help stop the Ebola outbreak. What kind of help should the U.S. provide? We asked two specialists.