Probe: FEMA sugarcoated danger of hurricane trailers

• Story Highlights
• FEMA says it "did not suppress or inappropriately influence any report"
  
• Democrats on congressional panel say FEMA "ignored, hid and manipulated" data
  
• FEMA tests indicated trailers were safe if properly ventilated
  
• Probe: Expert said not divulging research constituted "threat to public health"
  
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