In Mistretta v. United States, decided in 1989, the Supreme Court upheld the federal sentencing guidelines and the U.S. Sentencing Commission that wrote them, ruling 8-1 that Congress had neither given away too much of its lawmaking power nor violated the separation of powers by placing the Commission inside the judicial branch.1Justia U.S. Supreme Court Center. Mistretta v. United States, 488 U.S. 361 (1989) The decision saved the guidelines system from collapse and made structured sentencing the backbone of federal criminal justice for nearly two decades.
How the Case Got to the Court
John Mistretta pleaded guilty to conspiring to distribute cocaine and was sentenced under the newly effective federal sentencing guidelines to 18 months in prison followed by three years of supervised release.2Legal Information Institute. Mistretta v. United States Instead of appealing the length of his sentence, he attacked the framework that produced it.
His two arguments went to the constitutional foundations of the Sentencing Reform Act of 1984. First, that Congress had handed off its own lawmaking authority to an unelected commission. Second, that housing that commission inside the judicial branch scrambled the separation of powers. If either argument succeeded, every federal sentence imposed under the guidelines would be in doubt. The Supreme Court took the case before the court of appeals had ruled, recognizing how much was riding on the answer.
Congress had created the U.S. Sentencing Commission as an independent agency within the judicial branch, made up of seven voting members appointed by the President and confirmed by the Senate, with at least three required to be federal judges.3Office of the Law Revision Counsel. 28 USC 991 – United States Sentencing Commission; Establishment and Purposes The Commission’s job was to build a grid tying sentencing ranges to the severity of the offense and the defendant’s criminal history. The first guidelines took effect on November 1, 1987.4United States Sentencing Commission. 1987 Federal Sentencing Guidelines Manual
Did Congress Give Away Too Much Power?
Under the Constitution, only Congress can make federal law. When it authorizes another body to act, it has to supply enough direction that the body is filling in details rather than legislating on its own. Courts test that direction using the “intelligible principle” standard.
Mistretta argued the guidelines were substantive law, not administrative detail. Deciding how long someone spends in prison looked like legislating, and Congress had simply told the Commission to go figure federal sentencing out.
The Court disagreed, pointing to how much guidance Congress had actually written into the statute. The Sentencing Reform Act named four purposes of sentencing: proportionate punishment, deterrence, protecting the public, and rehabilitation.5Office of the Law Revision Counsel. 18 USC 3553 – Imposition of a Sentence It listed seven factors the Commission had to weigh in defining offense categories, including the seriousness of the crime, the harm caused, and the deterrent effect. It listed eleven factors for defendant categories, from criminal history to family ties. It set a structural cap: within any sentencing range, the top could not exceed the bottom by more than 25 percent or six months, whichever was greater.6Office of the Law Revision Counsel. 28 USC 994 – Duties of the Commission
Congress also told the Commission to start from existing average sentences, and it forbade any consideration of race, sex, national origin, creed, or socioeconomic status.1Justia U.S. Supreme Court Center. Mistretta v. United States, 488 U.S. 361 (1989) That level of instruction, the Court concluded, easily met the intelligible principle test. The Commission had been given a tightly fenced yard to work within.
Did the Commission Belong in the Judicial Branch?
The second challenge focused on where Congress had placed the Commission. Courts interpret and apply the law. A body writing binding sentencing rules looks like it is making law. Mistretta argued that lodging a rulemaking agency inside the judiciary blurred lines the Constitution keeps separate.
The Court acknowledged the arrangement was unusual, describing the Commission as “a peculiar institution within the framework of our Government.”2Legal Information Institute. Mistretta v. United States But sentencing had always been closely tied to the judiciary, and an expert body developing sentencing policy fit within that tradition. The Commission decided no cases and exercised no judicial power. Its function was administrative, and it drew on judicial expertise to perform that function.
The requirement that at least three federal judges sit on the Commission raised a distinct question: were judges being drafted into nonjudicial work in a way that threatened the courts’ independence? The Court said no. Service was voluntary. Nothing in the Constitution bars judges from holding extrajudicial appointments, unlike the express prohibition on members of Congress. Early Chief Justices had served in diplomatic and executive roles while remaining on the bench.1Justia U.S. Supreme Court Center. Mistretta v. United States, 488 U.S. 361 (1989) Judges on the Commission exercised administrative authority derived from the statute, not judicial power derived from Article III.
The Ruling and Justice Scalia’s Dissent
Justice Blackmun wrote the majority opinion, joined by seven other justices. Mistretta’s 18-month sentence stood, and the guidelines took full effect across the federal system, ending years of uncertainty in the lower courts and sharply narrowing the sentencing discretion judges had exercised for decades.
Justice Scalia dissented alone. He called the Sentencing Commission “a sort of junior varsity Congress” with no constitutional basis.1Justia U.S. Supreme Court Center. Mistretta v. United States, 488 U.S. 361 (1989) In his view, the Commission existed for a single purpose: to write rules that decided how long people went to prison. That was lawmaking, and labeling it administrative did not change what it was.
Scalia treated the boundaries between branches as rigid rather than flexible, and he warned that approving this kind of institutional improvisation, however useful the result, would erode the constitutional structure over time. He conceded the Commission might produce good policy, but wrote that “there are many desirable dispositions that do not accord with the constitutional structure we live under.”
What Happened to the Guidelines After Mistretta
Mistretta settled whether the guidelines could exist. It did not settle whether they could operate as mandatory rules. Sixteen years later, in United States v. Booker (2005), the Court held that the mandatory application of the guidelines violated the Sixth Amendment right to a jury trial.7Justia U.S. Supreme Court Center. United States v. Booker, 543 U.S. 220 (2005)
The problem was judicial fact-finding. Under the mandatory system, a judge could increase a sentence based on facts the judge found by a preponderance of the evidence, even if those facts had never been presented to the jury or proven beyond a reasonable doubt. Any fact increasing a sentence beyond what the jury verdict alone would support had to be found by a jury under the reasonable doubt standard.
Justice Breyer’s remedial opinion severed the provision making the guidelines mandatory, 18 U.S.C. § 3553(b)(1), along with the related appellate review provision.8Legal Information Institute. United States v. Booker The guidelines survived as advisory recommendations. Federal judges still must consult them and calculate the recommended range, but they can impose a different sentence after weighing the full set of statutory factors, including the seriousness of the offense, the need for deterrence, and the goal of avoiding unwarranted disparities.5Office of the Law Revision Counsel. 18 USC 3553 – Imposition of a Sentence Appellate courts review those sentences for reasonableness.
Mistretta’s Continuing Role in Nondelegation Law
Mistretta’s most lasting contribution may be its reinforcement of the intelligible principle test. No federal statute has been struck down on nondelegation grounds since 1935, and Mistretta made clear that even broad delegations pass constitutional muster when Congress supplies meaningful direction.
In Gundy v. United States (2019), the Court reaffirmed the standard, citing Mistretta for the proposition that “a statutory delegation is constitutional as long as Congress lays down by legislative act an intelligible principle to which the person or body authorized to exercise that authority is directed to conform.”9Supreme Court of the United States. Gundy v. United States Gundy also revealed a Court less comfortable with the doctrine’s permissiveness, with several justices signaling interest in tightening the test. For now, the framework Mistretta endorsed remains the governing rule.