Millions of private telegrams sent from, to, or through the United States were obtained by the National Security Agency (NSA), under a secret arrangement with U.S. telegraph companies, from 1947 to 1975.
数百分封来自、抵达或途经美国的私人电报，在1947到1975年间通过国家安全局与美国电信公司签订的秘密协议，被国家安全局获取，。