Statute of Limitations?
*** SPOILER ALERT ***
I'm no law expert so I don't know. The tuna factory robbery took place 15 years before Smiler crashed to his death. He told people where he buried the money, and they found the money.
But (aside from his greed to get the money) why would Culpepper even care? In fact why would the police chief Al care? I assume the tuna factory was insured, and I assume the statute of limitations on an armed robbery crime would have expired. But as I say, I'm no expert and so I may be missing something, so I'd appreciate an explanation, thanks.