And how is it determined (beyond a reasonable doubt, with a vigorous defense) that you committed a crime to yield those proceeds?
Also I can totally be wrong about this its one of those "I' think I heard this a few times" but I think this is one of those things where the burden of proof ends up more on the side of the accused then on the gov't.
That's how tyrannies operate.
The thing is, proof beyond a reasonable doubt is not mathematical/logical proof, it's (as I recall the jury instructions I've seen on this) basically proof to a degree that a reasonably diligent person would use in their most important business dealings.
Multiple sources of evidence that point in the same direction, even when there are theoretically possible innocent explanations for all them, can still constitute "proof beyond a reasonable doubt", which is not "proof beyond any doubt".
And how is it determined (beyond a reasonable doubt, with a vigorous defense) whether or not you committed the crime of tax evasion?