Mathis v. United States
The Court ruled that a prior state burglary conviction cannot trigger a federal 15-year mandatory minimum sentence if the state law covers more places than 'generic' burglary does, even when the listed places are just alternative ways of satisfying one element rather than separate crimes.
The decision means that judges sentencing under the Armed Career Criminal Act must ignore what a defendant actually did and focus only on the legal elements of the crime he was convicted of — a rule that, as the concurrences and dissents note, may disqualify burglary convictions in many states from ever counting toward the enhanced sentence.
“The key [under ACCA] is elements, not facts.”
The majority's central rule for deciding whether a prior conviction counts toward the enhanced sentence.
How it got here: A federal district court imposed the enhanced sentence; the Eighth Circuit affirmed; the Supreme Court granted review to resolve a circuit split over the means/elements question.
The Case in Depth
What happened
Richard Mathis pleaded guilty to illegally possessing a firearm. Because he had five earlier Iowa burglary convictions, the government sought a 15-year mandatory minimum sentence under a federal law aimed at repeat violent offenders. Iowa's burglary law, unlike the generic definition of burglary used for that federal law, covers break-ins not just of buildings but also of vehicles, watercraft, and aircraft, listed as alternative ways of committing the single crime.
The question before the Court
If a state burglary law lists several possible locations — like buildings, vehicles, or boats — as different ways of satisfying one element, can a judge look at the record to see which location a defendant actually broke into, in order to count the conviction toward a mandatory federal sentence?
The Court's answer
No — the Court ruled that a sentencing judge cannot look at old case records to find out which alternative location a defendant actually broke into, when a state burglary law simply lists different means (like building, vehicle, or boat) of satisfying one broad element. Because Iowa's burglary law covers more than the generic definition once all of those alternative means are considered together, none of Mathis's Iowa burglary convictions could count toward the federal mandatory minimum.
This holds true no matter how clear the record is about what the defendant actually did. The Court's rule cares only about the legal elements the crime required, not the real-world facts, extending the same elements-only approach the Court has applied to burglary convictions for over 25 years.
Curious how the Court got there? See the step-by-step legal reasoning →
Why it matters
Thousands of federal defendants facing the Armed Career Criminal Act's 15-year mandatory minimum are affected by how courts read old state burglary convictions. The ruling means many state burglary laws — which often cover vehicles or boats along with buildings — can no longer support the enhancement, regardless of what the defendant actually broke into, potentially shortening sentences for people with such convictions.
What changes now
The Eighth Circuit's judgment allowing the enhanced sentence is reversed, so Mathis cannot be sentenced under the 15-year mandatory minimum based on these Iowa burglary convictions. This is a final merits decision resolving the legal question, though it may lead to further disputes in lower courts over which state statutes list 'elements' versus 'means' for similar burglary and other predicate-offense laws.
What this does not decide
The Court did not decide that Iowa's burglary law, or similar laws in other states, could never support an enhanced sentence — only that Iowa's locational element, as written, is broader than generic burglary. It also left open how courts should determine whether other statutes list means or elements when state law is unclear.
Concurrences and dissents
Concurrence — Justice Kennedy
Justice Kennedy joined the majority because precedent required it, but voiced reservations about relying on Apprendi v. New Jersey, which he believes was wrongly decided and does not itself compel the elements-based approach. He suggested the resulting sentencing disparities are troubling and urged Congress to amend the statute if it disagrees with how the law is now applied.
Concurrence — Justice Thomas
Justice Thomas joined the majority as a faithful application of precedent, emphasizing that refusing to let judges find the 'means' behind a prior conviction avoids further expanding the exception, from Almendarez-Torres, that lets judges rather than juries find the fact of a prior conviction. He continues to believe that exception, and reliance on judge-found facts in this sentencing scheme generally, violates the Sixth Amendment.
Dissent — Justice Breyer
Justice Breyer argued the means/elements distinction should not matter for sentencing purposes, because the real question is simply whether the record shows the jury necessarily found facts matching generic burglary, regardless of whether state law labels those facts as elements or means. He warned the majority's approach will create a confusing, hard-to-research inquiry for federal judges across many states with little guidance on the means/elements question.
Dissent — Justice Alito
“The majority disdains such practicality, and as a result it refuses to allow a burglary conviction to be counted even when the record makes it clear beyond any possible doubt that the defendant committed generic burglary.”Alito's core objection that the ruling produces unfair results even when the facts are undisputed.
Justice Alito, using an extended analogy to a driver who blindly followed a malfunctioning GPS, argued the Court's entire line of categorical-approach cases starting with Taylor was misguided and has produced absurd results, potentially disqualifying burglary convictions in many states even when the record makes clear the defendant committed a real, generic burglary. He would let sentencing judges look at the record to confirm the actual location burglarized rather than relying on a rigid means/elements distinction.
How the Court got there
The legal reasoning, step by step
- The Court applied the categorical approach, its longstanding method for deciding whether a past conviction counts as a listed 'violent felony': compare the legal elements of the crime of conviction to the elements of the generic version of that crime, ignoring the real-world facts of what the defendant did.
- Because Iowa's burglary law's list of locations (building, structure, vehicle, water vehicle, air vehicle) are alternative 'means' of satisfying one broad element rather than separate elements defining separate crimes, the Court held that a sentencing judge has no legal basis to look at old case records to figure out which specific location the defendant actually entered.
- The Court explained that the 'modified categorical approach,' which does let judges consult records like charging documents, may only be used to identify which alternative element — not which alternative means — was the basis for a conviction, since only elements must be proved to a jury or admitted by a defendant.
- Three reasons supported treating means as irrelevant: the statute's own text asks about 'convictions,' not conduct; letting a judge find facts beyond the elements would raise Sixth Amendment concerns since only a jury can find facts that increase a sentence; and relying on non-essential facts in old records risks unfairness because defendants had no reason to contest facts that did not matter to their prior convictions.
- Since Iowa's locational element, taken as a whole, is broader than the generic 'building or other structure' requirement, the mismatch between the elements is enough to disqualify Mathis's prior convictions from counting, regardless of whether he in fact broke into structures rather than vehicles.
Doctrinal impact
Cases affected by this decision
Reaffirms Taylor v. United States (495 U.S. 575)
The Court leans on Taylor's 25-year-old elements-only rule as still controlling how prior convictions are matched to generic offenses.
Reaffirms Descamps v. United States (570 U.S. ___)
The Court relies on Descamps to confirm the modified categorical approach may only identify elements, never facts or means.