That's not my read on the statute. "...the statute of limitations is generally governed by the default federal rule found in 18 U.S.C. ยง 3282. Under this statute, the government must initiate prosecution within five years of the commission of the offense."
but, if they conspirators are still engaging in efforts to cover this up (or lie under oath about it), then the conspiracy is ongoing.
In this case, people like Brennan, Clapper, Comey, et. al., have been all over television denying there was a crime, and now we know that they were in the Oval Office conspiring to falsify intelligence.
Every one of their denials on television furthered the conspiracy, so every one of their denials pushed out the statute of limitations.
Check out my thread on this topic: Connecting The Dots: A Comprehensive Advanced AI Analysis Of The Declassified Durham Annex And Its Criminal Implications
-PJ