Beginning immediately and lasting indefinitely, travelers from 14 nations will have to undergo increased airport screening when they're flying to the United States, the Obama administration announced this week.The increased screening—which includes full-body pat downs, increased scrutiny of carry-on luggage and, when the technology's available, whole-body scans that allow security personnel to scan beneath passengers' clothes for hidden explosive or weapons—applies to passengers holding passports from, and to passengers taking flights originating from or passing through, "countries of interest" or countries considered "state sponsors of terrorism." The former group includes Afghanistan, Algeria, Lebanon, Libya, Iraq, Nigeria, Pakistan, Saudi Arabia, Somalia and Yemen, while the latter group includes Cuba, Iran, Sudan and Syria."TSA is mandating that every individual flying into the U.S. from anywhere in the world traveling from or through nations that are state sponsors of terrorism or other countries of interest will be required to go through enhanced screening," the Transportation Security Administration said.Even as it's increasing security for some passengers, however, the TSA is decreasing it for others, as the Obama administration said this week that American citizens and most others who are not flying through the aforementioned countries will no longer have to automatically face the increased security measures imposed on international flights to the United States following the Christmas Day bombing plot.