Statute of Limitations by Crime
Albeit most felonies are represented by the overall five-year statute of limitations, Congress has picked longer periods for explicit kinds of violations:
20 years - Burglary of works of art (clearly rich people lobbied for limitation extensions on this one)
Specific violations against financial organizations
8 years - Non-violent terrorist offenses that might be arraigned whenever submitted under brutal conditions. Analytical challenges or the reality of the wrongdoing appear to have given the reasoning to amplification of as far as possible for arraigning these offenses past the five-year standard.