from reuters.com: Kathleen Sebelius, the U.S. health secretary who oversaw the botched rollout of President Barack Obama’s signature healthcare reforms, has resigned, a senior administration official said on Thursday. Obama has chosen Sylvia Mathews Burwell, his budget director, to replace Sebelius, a second official said. Obama was due to announce the change with Sebelius and Burwell at his side at a White House event at 10:45 ET on Friday. Sebelius, 65, became the public face for the problem-plagued start to the enrollment period for Obamacare, which was meant to reduce the number of Americans without health insurance and cut into massive U.S. healthcare costs.