Napolitano retracts "passive surveillance" term...

Homeland Security Secretary Janet Napolitano is asserting that the description she initially gave of the border swine-flu monitoring effort no longer applies.Appearing Wednesday before a Senate panel, Napolitano said that "passive surveillance" is "not an accurate picture of what is going on" at U.S. entry points. She had used that term Tuesday morning to describe the nature of the monitoring for illness...