Spying Program Snared U.S. Calls By JAMES RISEN and ERIC LICHTBLAU WASHINGTON, Dec. 20 - A surveillance program approved by President Bush to conduct eavesdropping without warrants has captured what are purely domestic communications in some cases, despite a requirement by the White House that one end of the intercepted conversations take place on foreign soil, officials say. The officials say the National Security Agency's interception of a small number of communications between people within the United States was apparently accidental, and was caused by technical glitches at the National Security Agency in determining whether a communication was in fact...