Regarding the Pelosi example, it's even worse than what was suggested above. The TSLA trade was placed a few days before Biden came out and said they planned to

Regarding the Pelosi example, it's even worse than what was suggested above. The TSLA trade was placed a few days before Biden came out and said they planned to buy EVs for government vehicles, which was an announcement that directly caused TSLA to spike up the second it was broadcast to the market. Again though there's plausible deniability, as you say. It needs to just be outright banned.