Khalaf & Nguyen understands the seriousness of Double Jeopardy.

In legal terms, double jeopardy is a procedural defense and constitutional right that prevents an individual from being tried twice for the same offense in the same jurisdiction.

"...nor shall any person be subject for the same offence to be twice put in jeopardy of life or limb..."

• A second prosecution after acquittal
  – If you're found not guilty, the government cannot retry you for the same crime.

• A second prosecution after conviction
  – If you've already been convicted, you can't be prosecuted again for that same crime.

• Multiple punishments for the same offense
  – You can’t be punished more than once for the same crime.

• Separate sovereigns doctrine: Different jurisdictions (e.g., state vs. federal) can prosecute separately for the same act.

• Mistrial or hung jury.

• Appeals by the defendant: If the defendant successfully appeals a conviction, a new trial may be permitted.

Here are some realistic examples and how double jeopardy applies in different situations

Scenario:

John is charged with burglary and goes to trial. The jury finds him not guilty.

Result:

The prosecution cannot charge him again for that same burglary—even if new evidence comes up later.

➡️ Double jeopardy protection applies.

Scenario:

Maria is found guilty of assault by a jury. She appeals, and the Supreme Court or Court of Appeals reverses and remands for a new trial because the judge made a legal error during trial.

Result:

The state can retry her because the original conviction was voided by her own appeal.

➡️ Double jeopardy does not bar retrial in this situation.

Scenario:

David robs a bank. He’s prosecuted and acquitted in state court for robbery.

Result:

The federal government can still prosecute him for federal bank robbery charges based on the same act.

➡️ Not double jeopardy because state and federal are separate sovereigns.

Facts:

Alex Taylor is accused of felony aggravated assault in Jackson, Mississippi, after allegedly hitting someone with a baseball bat during a fight outside a bar.

He is charged under Miss. Code Ann. § 97-3-7 (aggravated assault). The victim suffers a broken arm.

At trial, John argues self-defense. The jury deliberates and finds him not guilty of aggravated assault.

➡️ Acquitted.

Two months after the acquittal, new surveillance footage emerges showing that John swung first and hit the victim from behind. Prosecutors believe this contradicts his self-defense claim.

The state wants to charge John again, either:

• with simple assault, or
• retry him on the aggravated assault charge.

Double jeopardy applies.

• Because John was acquitted of aggravated assault in a valid trial, the State of Mississippi cannot retry him for the same conduct.

• The state also cannot charge him with simple assault now, since that is a lesser-included offense of aggravated assault arising from the same incident.

✅ Protected by double jeopardy.

If the assault also violated a federal law (e.g., if the victim was a federal employee or if the attack was considered a hate crime under federal statute), the federal government could bring charges separately.

This is due to the dual sovereignty doctrine, which Mississippi courts follow.