I think the idea is that since up until 2012, congress was simply allowed to trade on inside information, and it certainly feels like some didn't stop. In that

I think the idea is that since up until 2012, congress was simply allowed to trade on inside information, and it certainly feels like some didn't stop. In that mindset the risk is ameliorated by indirect access to additional information. Then why isn't the whole market doing it to the point that it doesn't make sense to follow? There's a lot of capital tied up in positions that look for extremely stable stores of wealth with as low risk as possible rather than something that would accept the idea of "we're fundamentally following illegal positions".