In October 2014, the first patient on American soil infected with the Ebola virus sits in isolation in a Texas hospital, prompting calls for travel restrictions between the United States and Ebola-stricken countries.Meanwhile, four years ago, the administration of President Barack Obama moved with virtually no fanfare to abandon a comprehensive set of regulations which the Centers for Disease Control and Prevention (CDC) had called essential to preventing international travelers from spreading deadly diseases inside the United States.The CDC had proposed the regulations in 2005 under the administration of George W. Bush, reported USA Today in 2010. The original impetus...