Murder is almost always a state crime. More than nine out of ten homicide prosecutions in the United States are handled by local police and district attorneys applying state criminal codes, and the question of whether murder is a state or federal crime turns on whether the killing has a specific connection to a federal interest. Federal jurisdiction attaches only when something about the victim, the location, the motive, or the broader criminal scheme pulls the case into federal court. When it does, the rules, the penalties, and the prison system all change.
Why Murder Usually Stays in State Court
The Constitution gives states broad authority to protect the health, safety, and welfare of their residents. Criminal law — including defining murder, setting its degrees, and punishing it — sits inside that authority. Every state has its own homicide statutes separating first-degree murder from second-degree murder from manslaughter, with penalties that vary significantly from one state to the next.
When a killing happens, local or state police respond, investigate, and build the case. A district attorney or state’s attorney decides what to charge and takes it through state court. There is no general federal murder statute that reaches every killing in the country. Federal law only reaches homicides tied to a defined federal interest, so unless one of the triggers below applies, the case stays in state hands from first call to final sentence.
When a Killing Becomes a Federal Case
Federal jurisdiction is never automatic. It requires a concrete connection to something the federal government has constitutional authority to protect: its employees, its land, its institutions, civil rights, or the channels of interstate commerce.
Killing a Federal Officer or Employee
Killing someone who works for the federal government while they are performing their official duties, or because of those duties, is a federal crime. The statute covers FBI agents, federal judges, members of Congress, DEA agents, military service members, federal prison guards, and other federal employees across all three branches.1Office of the Law Revision Counsel. 18 USC 1114 – Protection of Officers and Employees of the United States A separate statute makes it a federal offense to kill an immediate family member of a federal official, judge, or law enforcement officer when the killing is meant to intimidate or retaliate against that official.2Office of the Law Revision Counsel. 18 USC 115 – Influencing, Impeding, or Retaliating Against a Federal Official by Threatening or Injuring a Family Member
Killings on Federal Land and in Indian Country
A homicide on land under federal control falls within what the law calls the “special maritime and territorial jurisdiction of the United States.”3Office of the Law Revision Counsel. 18 USC 7 – Special Maritime and Territorial Jurisdiction of the United States Defined That includes military bases, national parks, federal courthouses, VA hospitals, and other land the federal government owns or has exclusive jurisdiction over. A killing inside Yellowstone or on a Navy base is a federal case.
Indian country has its own framework. Under the Major Crimes Act, murder committed by a Native American within Indian country is subject to federal prosecution, with the same penalties that apply to killings under exclusive federal jurisdiction.4Office of the Law Revision Counsel. 18 USC 1153 – Offenses Committed Within Indian Country Jurisdiction in Indian country is among the most complex in criminal law, and the answer often depends on the identities of the victim and the accused as well as where the crime occurred.
Murder Committed During Another Federal Crime
When a killing happens during a crime that is already federal, the murder itself becomes federal. A bank robbery that turns deadly is punishable by death or life imprisonment under federal law.5Office of the Law Revision Counsel. 18 USC 2113 – Bank Robbery and Incidental Crimes Using a firearm to kill someone during a drug trafficking crime is a separate federal offense that can carry a death sentence.6Office of the Law Revision Counsel. 18 USC 3591 – Sentence of Death
Organized crime killings are also federal. A murder committed to gain entrance to, maintain a position in, or receive payment from an enterprise engaged in racketeering is punishable by death or life imprisonment.7Office of the Law Revision Counsel. 18 USC 1959 – Violent Crimes in Aid of Racketeering Activity Acts of domestic or international terrorism that result in death carry their own federal charges.
Interstate Conduct
Crossing state lines or using interstate commerce can pull a killing into federal court. Kidnapping where the victim is transported across a state border is a federal crime, and if the victim dies, the penalty can be death or life imprisonment.8Office of the Law Revision Counsel. 18 USC 1201 – Kidnapping Murder-for-hire is another clear example: using the mail, traveling across state lines, or using any facility of interstate commerce with the intent to have someone killed carries up to life imprisonment, or the death penalty if the target dies.9Office of the Law Revision Counsel. 18 USC 1958 – Use of Interstate Commerce Facilities in the Commission of Murder-for-Hire
Civil Rights Violations and Hate Crimes
When a government official acting in an official capacity kills someone and deprives them of their constitutional rights, federal prosecutors can bring charges even if the state also prosecutes. If death results, the federal penalty rises to life imprisonment or death.10Office of the Law Revision Counsel. 18 USC 242 – Deprivation of Rights Under Color of Law This statute has historically been the vehicle for federal prosecution of law enforcement officers who kill in violation of a victim’s civil rights, particularly when a state case fails to produce accountability.
Bias-motivated killings can also be federal under the Matthew Shepard and James Byrd Jr. Hate Crimes Prevention Act. A murder motivated by the victim’s race, religion, national origin, gender, sexual orientation, gender identity, or disability is a federal crime if it has a connection to interstate commerce or occurs on federal land, and the penalty if death results is up to life imprisonment.11Office of the Law Revision Counsel. 18 USC 249 – Hate Crime Acts Hate crime prosecutions require written certification from the Attorney General before they can proceed.
Killing a Witness or Informant
Murdering someone to prevent them from testifying in a federal proceeding, producing evidence, or communicating with law enforcement about a federal offense is a standalone federal crime. The penalty for an intentional killing mirrors the general federal murder statute: death or life imprisonment.12Office of the Law Revision Counsel. 18 USC 1512 – Tampering With a Witness, Victim, or an Informant The statute even reaches conduct outside the United States.
When Both Governments Can Prosecute
A single killing can violate both state and federal law. When it does, both governments have authority to prosecute, and that is not double jeopardy. The Supreme Court reaffirmed this in Gamble v. United States (2019), holding that because state and federal governments are separate sovereigns with separate laws, violating both creates two distinct offenses.13Supreme Court of the United States. Gamble v. United States A defendant can be convicted and sentenced in both systems for the same act.
Dual prosecutions remain rare in practice. The Department of Justice follows an internal rule known as the Petite Policy that restricts federal charges after a state has already prosecuted the same conduct. A second prosecution requires a substantial federal interest, a finding that the state case left that interest “demonstrably unvindicated,” and a belief that the federal evidence can support a conviction. An Assistant Attorney General must personally approve the case.14United States Department of Justice. Justice Manual 9-2.000 – Authority of the U.S. Attorney in Criminal Division Matters/Prior Approvals Civil rights, hate crime, and organized crime cases are the most common follow-ups when a state result falls short.
What Changes When the Case Is Federal
Whether a murder case goes state or federal affects almost every part of it, from who investigates to where the defendant serves time.
Who Investigates and Prosecutes
State cases are investigated by local or state police and prosecuted by a district attorney. Federal cases are investigated by the FBI, DEA, ATF, or another federal agency and prosecuted by a U.S. Attorney’s office. Federal investigators tend to have deeper resources for complex cases involving organized crime, public corruption, or interstate activity.
Grand Jury Indictment
The Fifth Amendment requires that any federal charge carrying a potential death sentence or more than a year in prison be brought through a grand jury indictment.15Legal Information Institute. Federal Rules of Criminal Procedure – Rule 7, The Indictment and the Information Every federal murder case starts there. States vary: some require grand jury indictments for serious felonies, others let prosecutors file charges directly after a preliminary hearing.
Sentencing
Federal judges apply the Federal Sentencing Guidelines, a structured framework that weighs the severity of the offense, the defendant’s criminal history, and specific circumstances such as firearm use or victim vulnerability.16United States Department of Justice. Sentencing State sentencing ranges from state guidelines to broad judicial discretion to varying mandatory minimums.
No Parole
Defendants convicted of federal offenses committed after November 1, 1987, are not eligible for parole. The federal system replaced parole with “supervised release,” a period of court-monitored supervision that begins only after the full prison sentence is served.17Department of Justice. History of the Federal Parole System A federal life sentence means life. Many states still allow parole, which makes long federal sentences significantly harsher in practice.
The Death Penalty
Federal law authorizes the death penalty for first-degree murder and for killings tied to certain federal crimes, including drug trafficking, racketeering, and terrorism.18Office of the Law Revision Counsel. 18 USC 1111 – Murder6Office of the Law Revision Counsel. 18 USC 3591 – Sentence of Death A defendant can face a federal death sentence even if the killing occurred in a state that has abolished capital punishment. The federal government is its own sovereign, and its penalty provisions apply regardless of state law. A January 2025 executive order declared a policy of restoring the federal death penalty and ensuring capital punishment laws are “faithfully implemented.”19Federal Register. Restoring the Death Penalty and Protecting Public Safety
No Statute of Limitations
Federal law imposes no time limit on bringing charges for any offense punishable by death.20Office of the Law Revision Counsel. 18 USC 3281 – Capital Offenses Because federal first-degree murder carries a potential death sentence, federal prosecutors can indict decades after the killing. Most states follow the same rule for murder at the state level, but the federal provision ensures that cold-hit DNA cases and long-running organized crime investigations are never time-barred.
Where the Defendant Serves Time
A state conviction means a state prison system. A federal conviction means the Federal Bureau of Prisons, which operates under its own rules and classification system. Defendants sentenced in both systems for the same conduct do not automatically receive credit for time served on one sentence toward the other; federal law generally prohibits “double credit,” so time already counted toward a state sentence will not also reduce the federal sentence.