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UNITED STATES v. NEW YORK TELEPHONE CO.

No. 76-835.

434 U.S. 159 (1977)

UNITED STATES v. NEW YORK TELEPHONE CO.

Supreme Court of United States.

Decided December 7, 1977.

Attorney(s) appearing for the Case

Deputy Solicitor General Wallace argued the cause for the United States and was on the brief as Acting Solicitor General. With him on the brief were Assistant Attorney General Civiletti, Deputy Solicitor General Randolph, Harriet S. Shapiro, Jerome M. Feit, and Marc Philip Richman.

George E. Ashley argued the cause for respondent. With him on the brief was Frank R. Natoli.

MR. JUSTICE WHITE delivered the opinion of the Court.

This case presents the question of whether a United States District Court may properly direct a telephone company to provide federal law enforcement officials the facilities and technical assistance necessary for the implementation of its order authorizing the use of pen registers1 to investigate offenses which there was probable cause to believe were being committed by means of the...

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