There is no statute of limitations on treason under federal law. Because the offense is punishable by death, it falls under 18 U.S.C. § 3281, which lets the government bring charges at any time, with no deadline whatsoever.1Office of the Law Revision Counsel. 18 USC 3281 – Capital Offenses Decades can pass between the act and the indictment, and the clock never runs out.
Why the Clock Never Starts
The default federal filing deadline is five years. Under 18 U.S.C. § 3282, a person generally cannot be prosecuted for a non-capital federal crime unless the indictment comes within five years of the offense.2Office of the Law Revision Counsel. 18 USC 3282 – Offenses Not Capital Congress carved out a blanket exception for anything carrying a potential death sentence: § 3281 says an indictment for any offense “punishable by death” may be found at any time without limitation.1Office of the Law Revision Counsel. 18 USC 3281 – Capital Offenses
Treason qualifies because its penalty statute, 18 U.S.C. § 2381, lists death as a possible sentence.3Office of the Law Revision Counsel. 18 USC 2381 – Treason Whether prosecutors actually seek the death penalty in a given case does not matter. The question is whether the statute authorizes it, and for treason, it does. That eligibility alone removes any time bar.
The Department of Justice has noted that the unlimited period may even survive if Congress later repeals the death penalty for a particular offense. So long as the statute carried a death sentence when the crime was committed, there is an argument that § 3281 still applies.4United States Department of Justice. Criminal Resource Manual 650 – Length of Limitations Period
What Makes Treason a Capital Offense
Section 2381 sets out the full range of penalties on conviction:
- Death, as the maximum penalty.
- Imprisonment of at least five years, with no stated maximum short of death.
- A fine of at least $10,000.
- Permanent disqualification from holding any office under the United States.3Office of the Law Revision Counsel. 18 USC 2381 – Treason
The death authorization is what pulls treason into § 3281. Everything else about the sentence is secondary to the limitations question.
Can a Defendant Challenge an Old Treason Charge?
No filing deadline does not mean the government can sit on a case forever without consequence. The Fifth Amendment’s due process clause still gives a defendant a potential defense when pre-indictment delay is extreme and harmful.
Under United States v. Marion (1971) and United States v. Lovasco (1977), a defendant challenging a delayed prosecution must show two things. First, the delay actually damaged the ability to mount a defense, through losses like unavailable witnesses or destroyed exculpatory evidence; general complaints about faded memories are not enough. Second, the government delayed deliberately to gain a tactical advantage, not merely out of caution or slow investigation.
This is a steep standard. Courts give prosecutors wide discretion to investigate at their own pace, and the burden falls entirely on the defendant to prove both actual prejudice and bad faith. For a crime with no filing deadline, this due process check is the only real backstop.
Deadlines for Related National Security Offenses
Prosecutors far more often charge offenses that sit near treason than treason itself. Those related crimes have their own, shorter deadlines, and assuming they share treason’s no-limit rule is a common mistake.
Seditious Conspiracy
Seditious conspiracy under 18 U.S.C. § 2384 covers agreements by two or more people to overthrow the government by force, wage war against the United States, or forcibly oppose federal authority. The maximum penalty is 20 years and a fine.5Office of the Law Revision Counsel. 18 USC 2384 – Seditious Conspiracy Because it is not punishable by death, it falls under the default five-year limitations period.2Office of the Law Revision Counsel. 18 USC 3282 – Offenses Not Capital
Misprision of Treason
Someone who knows treason has been committed and conceals it instead of reporting it to the President, a federal judge, a state governor, or a state judge commits misprision of treason under 18 U.S.C. § 2382. The maximum penalty is seven years and a fine.6Office of the Law Revision Counsel. 18 USC 2382 – Misprision of Treason It is not a capital offense, so the standard five-year deadline applies.
Espionage
Espionage under 18 U.S.C. § 794 involves delivering national defense information to a foreign government. Certain forms are punishable by death, particularly when the offense leads to the death of an intelligence agent or involves nuclear weapons, military satellites, or war plans.7Office of the Law Revision Counsel. 18 USC 794 – Gathering or Delivering Defense Information to Aid Foreign Government Capital espionage charges fall under § 3281’s no-limitation rule. For non-capital espionage offenses, the Internal Security Act of 1950 provides a ten-year statute of limitations instead of the standard five.4United States Department of Justice. Criminal Resource Manual 650 – Length of Limitations Period
Terrorism Offenses
Federal terrorism charges have their own rules under 18 U.S.C. § 3286. For non-capital terrorism offenses, the government has eight years to file charges.8Office of the Law Revision Counsel. 18 USC 3286 – Extension of Statute of Limitation for Certain Terrorism Offenses When a terrorism offense resulted in death, or created a foreseeable risk of death or serious bodily injury, there is no time limit at all.
Fleeing Stops the Clock
For crimes that do have a deadline, becoming a fugitive stops the clock entirely. Under 18 U.S.C. § 3290, no federal limitation period runs against a person who is a fugitive from justice.9Office of the Law Revision Counsel. 18 USC 3290 – Fugitives From Justice This matters little for treason, which already has no deadline, but it matters enormously for the related offenses above. Someone who commits seditious conspiracy and flees the country cannot wait out the five-year deadline from abroad.