Contractors describe scant pre-launch testing of U.S. healthcare site

By David Morgan and Susan Cornwell WASHINGTON (Reuters) – The Obama administration launched its troubled healthcare insurance website after only a minimum of crucial system-wide testing, despite contractors warning officials repeatedly about performance risks, a congressional panel heard on Thursday. Witnesses said the administration did not conduct end-to-end testing of the system's technology backbone until just the two weeks before one of the lynchpins of President Barack Obama's landmark healthcare policy opened to consumers on October 1. At a U.S. …