Consider Nancy Pelosi, who made $20M via trading in 2020. To have predicted the market would crash during otherwise good times and then rise during otherwise hard times, you would have had to be an economic genius. If we had banned our senators from trading, Pelosi would probably choose trading over guiding our nation, essentially employing her 200+ IQ to making money instead of making our nation great.
I say that instead of banning congress from trading, we should give them more power the better they are at trading, as doing so would ensure that the smartest congress members have their decisions more fairly weighted.