To get access to secrets you have to have the appropriate security clearances. I assume that Congressman have to go through the same process as everyone else does to get that access.
Don't assume they can all pass the test.
But more importantly, don't assume that 435 Congressman can keep a secret when, for some of them, letting out that secret furthers their political goals. I don't think they can and I believe that is why you have special committees in the House and Senate to deal with classified information.
You miss the point: These are America’s ELECTED, Constitutional Leaders in its most powerful body, the Congress.
Sen Diane Feinstein has the objective of totally doing away with your right to keep and bear arms.
SHE can know “secrets” and some other conservative congressman cannot?
That’s INSANITY!