House Democrats are worried about persistent problems with the rollout of President Barack Obama's health care law and one says the president needs to "man up" and fire those responsible.

For the first month alone, the Obama administration projected nearly a half million people world sign up for the new health insurance markets. But that was before the markets opened to a cascade of computer problems.

The Obama administration's internal projections called for strong enrollment in the states in the first year of new health insurance markets, according to unpublished estimates obtained by The Associated Press. Whether those expectations will bear out is unclear.

You'll have to get coverage by Valentine's Day to avoid penalties for being uninsured.

Independent experts say a design decision to require that consumers create online accounts before they can browse available health plans under President Barack Obama's insurance overhaul appears to have led to many of the program's technical problems.

The federal government's biggest foray into online commerce has left millions of tech-savvy Americans thoroughly bewildered.

Using overnight hours this weekend to debug the system, the Health and Human Service Department hoped to fix the technological problems that overwhelmed the launch of new health insurance markets.

Overloaded websites and jammed phone lines frustrated consumers for a second day as they tried to sign up for health insurance under the nation's historic health care overhaul.