Even airport TSA agents don't really believe they're making much of a difference. Or so suggests Jason Harrington, a former Transportation Security Administration employee who's written a revealing piece for Politico on what it's like to work for the agency on the ground floor. Harrington writes that many of his coworkers found their orders questionable, from selecting people for enhanced screenings based on their nationality to the broad use of full-body scanners. Harrington also writes that he hated that the job made him pat down children and the elderly and confiscate everything from nail clippers to homemade jellies under the...