Wolf Blitzer delivers the most important breaking news and political, international, and national security stories of the day. Tune to The Situation Room weekdays 5-7pm ET on CNN.
Breaking news in "The Situation Room": A White House source tells CNN that Health and Human Services Secretary Kathleen Sebelius is resigning. CNN's Brianna Keilar reports.
Chris Frates investigates claims that insurance companies are dumping doctors in response to the new health care law.
Monkey business at Obamacare hearing as website creators get grilled. CNN's Jeanne Moos has the hottest moments.
At midnight, the federal government may shut down, but 12:01am also marks the start of something new: Insurance exchanges under the Affordable Care Act begin. CNN's Tom Foreman explains the different Obamacare exchanges and how parts of the health care plan apply to everyone.
A study by actuaries released this week estimates Obamacare could raise costs by 32%. CNN's Brianna Keilar reports.
RELATED STORY: Health care law will raise insurers' costs, actuaries say
The CEO of Papa John's claims Obamacare could raise prices 11-14 cents a pie. CNN's Lisa Sylvester reports.
Is he correct? Tom Foreman fact checks the claims at CNN's magic wall.
RELATED CNN OPINION COLUMN: Will Obamacare raise the price of your pizza?
Wolf Blitzer responds to a twitter question from viewer Matthew Caulfield regarding the health care law.
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CNN's Dana Bash reports on the drama surrounding Republicans' latest attempt to overturn the health care law.
RELATED STORY: House Republicans vote, again, to repeal health care law