The Supreme Court allowed federal prosecutors in a criminal trial to use evidence obtained by wiretaps placed on outside telephone lines without a warrant, based on the idea that conversations were not protected by the Fourth Amendment. The ruling was reversed thirty-nine years later.
In convicting Roy Olmstead of illegally selling intoxicating liquors, federal prosecutors relied almost entirely on transcripts of his telephone conversations. Writing for a 5-4 majority, Chief Justice William H. Taft
William Howard Taft served as president of the United States from 1909 to 1913, but his greatest ambition was to be chief justice–a position that he held from 1921 until his death in 1930.
Due process, procedural
Katz v. United States
Search warrant requirement
United States District Court, United States v.