There is overwhelming bipartisan support for banning public officials from stock trading, such as this recent survey:

https://drum.lib.umd.edu/items/6dbca567-f940-4897-bde1-02610...

> Overwhelming bipartisan majorities favor prohibiting stock-trading in individual companies by Members of Congress (86%, Republicans 87%, Democrats 88%, independents 81%), as well as the President, Vice President, and Supreme Court Justices (87%, Republicans 87%, Democrats 90%, independents 82%) according to an in-depth survey by the Program for Public Consultation at the University of Maryland’s School of Public Policy.

Yet there is barely any movement to do anything about it. A pretty blatant failure of democracy in the US