> Since the laws preventing members of Congress from trading on information they receive as part of their duties, you can't say that the Pelosi's have violated any securities laws

The feds can and do go after people for using family members and friends to execute trades. So if Nancy Pelosi told her husband some material non-public info, and Paul Pelosi traded on it, that would still be insider trading.

There was a guy at Microsoft who was caught once using a friend to place trades. He said he talked himself past his ethical concerns by reasoning that members of Congress do it.

https://www.businessinsider.com/sec-alleges-insider-trading-...

Edit: to be clear, the absence of a prosecution does not mean that the Pelosis did not insider trade. Nor that they did. We can't tell from this distance, only speculate.