WASHINGTON (Reuters) - The Obama administration has asked former budget official and management expert Jeffrey Zients to help the administration manage the rocky roll-out of the Affordable Care Act known as Obamacare, the White House said on Tuesday.

The Department of Health and Human Services, which is managing the health-care programme's launch, has brought Mr Zients in to provide "management advice and counsel" to the project, White House spokesman Jay Carney said at a briefing on Tuesday.