My unpopular opinion is that I think politicians trade on non-public info much less often the the average netizen thinks. There are high profile or notable cases, yes. But I'm talking in general. Pelosi for instance recently traded Roblox in size. What kind of info could she possibly have about that. But Twitter was up in arms about it.

The obvious thing to do from a policy perspective is simply require investing in index funds with sales scheduled well in advance. C-suites and bankers have to do it, why let politicians even give the appearance of corruption.