Is there a statute of limitations on sexual assault

Yes, except sexual assault on children.

Explanation:

Statute of limitation is a window of time that the state has to charge the perpetrator. The purpose of the statute is to avoid making charges for a crime committed well in the past, thus making it impossible for the defendant to defend himself.

Statues of limitations very by the state and the gravity of the crime.

For capital crimes and and crimes associated with terrorism there is no statue of limitation.

For sexual assault, the statue depends on the state, for example, in Alaska, the statue is unlimited, while in Massachusetts it is 15 years.

Sexual assaults against children have no statue of limitation.