The Obama administration was given stark warnings just one month before that the federal healthcare site was not ready to go live, according to a confidential report obtained by CNN. The caution, from the main contractor CGI, warned of a number of open risks and issues for the HealthCare.gov web site even as company executives were testifying publicly that the project had achieved key milestones. The CGI document, which describes "outstanding issues currently being mitigated" says the testing timeframes are "not adequate to complete full functional, system, and integration testing activities" and lists the impact of the problems as "significant."...