New York Times travel columnist Joe Sharkey takes a closer look at TSA's policy on transporting cash after an ACLU lawsuit prompted a clarification from Washington. A TSA spokeswoman tells Sharkey that the agency will continue to pursue "potential evidence of criminal wrongdoing," but that "currency alone is not a threat." An ACLU attorney says the distinction is important because TSA searches are limited by Fourth Amendment guarantees against unreasonable searches. "The encounter Americans have with TSA screeners is the most common Fourth Amendment event in American life," he notes.
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