I read a good analysis of this Congressional stock trading and disclosure thing some years ago (during the BO administration because his admin "changed" the rules). Before BO was in office the existing laws on this were clear in spirit, but with plenty of loopholes and poorly enforced. The BO admin, under the cover of ostensibly fixing the loopholes, put lipstick on a pig and somewhat legalized the shit you seem congressional members doing now. It's been over 8 years since that analysis was done so I don't remember the details only the final bottom line analysis. This shouldn't be surprising to anyone.
One can avoid reality, but one cannot avoid the consequences of avoiding reality.