> I think it's impossible to prevent insider trading
Sure. It's impossible to prevent all crime. But that doesn't mean that rules and restrictions around what you can and can't do are useless. The existing rules for prohibiting insider trading when it comes to corporate executives work decently well; we should just expand those to apply to people in Congress (and make it apply to all securities for them).
It won't catch everything, but it will help. A lot.
Sure. It's impossible to prevent all crime. But that doesn't mean that rules and restrictions around what you can and can't do are useless. The existing rules for prohibiting insider trading when it comes to corporate executives work decently well; we should just expand those to apply to people in Congress (and make it apply to all securities for them).
It won't catch everything, but it will help. A lot.