The only reason we know about the trades in Congress is because they're following the law and reporting them. I don't think there is any evidence that members of Congress: 1) have access to classified info like this, and 2) are betting on polymarket.

That's not to say the behavior isn't extremely slimey but they are acting within the law. Your comment doesn't mention the executive branch and the various crypto "ventures" going on, like the Whitehouse dinner for investors of $TRUMP coin of which we have no idea who invested or what they got from it.