Title 18 section 3282 in general.
More specificly:
https://www.justice.gov/usam/criminal-resource-manual-650-length-limitations-period
I have since learned that the general provision may be overridden by specific laws. It is possible that the tax code has more specific statue of limitations.
" 1 :the act of subverting :the state of being subverted; especially :a systematic attempt to overthrow or undermine a government or political system by persons working secretly from within"
If they had a SOL problem, I doubt Gmvt would have brought case.
Likewise, if Defs had a SOL Affirmative Defense, I would have expected it to be raised at arraignment.
re: bail, $10,000,000. Total BS. At most, $1,000,000 secured by real property and let him walk.