WASHINGTON -- At a Congressional hearing to evaluate America's response to the Ebola outbreak, House Oversight Committee Chairman Darrell Issa (R-Calif.) eschewed the calm approach, suggesting U.S. medical officials are flailing in the dark and that their ignorance could prove deadly. Issa started by pointing out the flaws of the response so far, which has seen two nurses become infected in Texas while treating the first victim of the disease to become ill in the United States.