United States v. R. Enterprises, Inc.

United States v. R. Enterprises, Inc., 498 U.S. 292 (1991), was a United States Supreme Court case in which the court held that the three prong test for the issuance of a subpoena in United States v. Nixon does not apply to subpoenas issued by a grand jury. The Court concluded by stating that when a grand jury subpoena is challenged on relevancy grounds, the motion to quash must be denied “unless the district court determines that there is no reasonable possibility that the materials sought will produce information relevant to the grand jury's investigation.”[1]

United States v. R. Enterprises
Supreme Court of the United States
Argued October 29, 1990 Decided January 22, 1991
Full case name	United States v. R. Enterprises
Citations	498 U.S. 292 (more) 111 S. Ct. 722; 112 L. Ed. 2d 795; 1991 U.S. LEXIS 489
Holding
When a grand jury subpoena is challenged on relevancy grounds, the motion to quash must be denied unless the district court determines that there is no reasonable possibility that the materials sought will produce information relevant to the grand jury's investigation.
Court membership
Chief Justice William Rehnquist Associate Justices Byron White · Thurgood Marshall Harry Blackmun · John P. Stevens Sandra Day O'Connor · Antonin Scalia Anthony Kennedy · David Souter
Case opinions
Majority	O'Connor, joined by unanimous (Parts I, II); Rehnquist, White, Scalia, Kennedy, Souter (Parts III-A, IV); Rehnquist, White, Kennedy, Souter (Part III-B)
Concurrence	Stevens (in part), joined by Marshall, Blackmun