From NPR News in Washington, I am Jack Speer.Pointing to a quadruple in enrollment last month compare to the October for the federal healthcare exchange website,Health and Human Services Secretary Kathleen Sebelius says to House Panel todaypeople are reengaging with the site healthcare.gov.As NPR's David Welna explainsRepublicans on the panel remain dubious.House Energy and Commerce Committee Chairman Fred Upton and Michigan Republicanpressed Secretary Sebelius on the flawed October rollout of healthcare.gov."Knowing what you know today you wouldn't start the launch on October 1st?"I would have probably done a slower launch, maybe with fewer people,and done some additional beta testing.Sebelius who ignore Republican demand for her resignation says she wants some accountability."Now that the website is working more smoothly,I've determined it's the right time to begin a processto better understand the structural and managerial policies that led to the flawed launch."She has tasked Health and Human Services Inspector General to carry out that probe.David Welna, NPR News, the Capitol.The pilot of the Asiana Airline's jet that crashed while landing at San Francisco airport last summer told the investigatorshe was very stressed about landing the plane.NPR's Brian Naylor reportsthe National Transportation Safety Board is holding a daylong hearing on the crash that led three people died.The Korean pilot told NTSB investigators thathe fell very stressful, landing the Boeing 777 in San Franciscobecause the instrument landing system at the airport was not functioningand he was making a visual approach.The plane clipped the seawall at the edge of the runway with its landing gears spun around and burst into flames.