The wiretapping section of the bill was passed in part as a response to the U.S. Supreme Court decisions "Berger v. New York", 388 U.S. 41 (1967) and "Katz v. United States", 389 U.S. 347 (1967), which both limited the power of the government to obtain information from citizens without their consent, based on the protections under the Fourth Amendment to the U.S. Constitution.