Absolutely yes. It should be banned. They're elected officials, and they're in position of power. There shouldn't be any conflict of interest while they're passing any law, at the same time they shouldn't do insider trading which is already illegal.

But isn't it unfair if they already know some information and they are buying those stocks because of that insider information that's not public yet, this is going to be unfair to millions of users who are actively trading in the stock market. I would also argue that every job has certain limitations, like an army official is supposed to not sell internal secrets. One could argue that why someone having access to some information should not sell in the name of financial freedom. I would say FG position comes with certain limitations, and considering elected officials are in a position of power, they should not be allowed to trade individual stocks.

The reason I'm suggesting a blanket ban is because it's very difficult to enforce the alternative. There are different kinds of committees in a government, and each of these committees are responsible for a certain sector. Like semiconductors, arms, and ammunition etc. Now, enforcing that any elected official for a certain sector should not be allowed to just trade in that sector might sound reasonable, but it would be very difficult to enforce. On top of it, there could be an exchange between elected officials across different sectors, and it would be very difficult for us to know if that trade was because of some secret, undisclosed information, or it was based on public information. So it's just a logistical challenge, and I would like to have a blanket ban which ensures that there is no conflict of interest and the lawmakers are making laws which will generally help the country