Joe Biden has always been a man of mystery as to how he obtained his wealth, reportedly in the $90 million range. He doesn't understand markets, so we know it wasn't his investment acumen. He's an expert at nothing and has never written a significant book anyone would want to read. We also know that he's not much of a public speaker, stumbling his way through speeches, so he probably couldn't make much on speaking fees, though that could be a disguised avenue of bribery, particularly if fees are inflated. Still, it wouldn't explain $90 million. He's has been in...