Gil Kerlikowske, (R ) Commissioner of U.S. Customs and Border Protection, speaks to the media on the implementation at JFK of enhanced screening of travelers arriving from Ebola affected countries, at the International JFK airport in New York, October 11, 2014. Medical teams at New York's John F. Kennedy Airport begin more aggressive screening of travelers from three West African countries for signs of Ebola infection, as the United States steps up efforts to staunch the spread of the deadly virus. REUTERS/Eduardo Munoz (UNITED STATES - Tags: HEALTH SOCIETY IMMIGRATION) )