CMS Administrator Marilyn Tavenner on Thursday (Sept. 18) pledged the agency would conduct full "end-to-end" testing of healthcare.gov prior to the launch of open enrollment in November, likely either by the end of this month or early October. Tavenner also told members of Congress that the site will see continued improvement but will not be perfect in year two. The comments came during a sometimes fiery House oversight committee hearing that focused on the security of the exchange website, which...