Martha paid her time, these assholes should too.
Martha did some weird corner-case "small enough I suspect I can get away with it oops I forgot I'm a democrat guess I'm smoking blunts with Snoop from now on" stuff. Loeffler's husband, as am_Unition notes, is the fucking CEO of the fucking NYSE. Martha sold $230k worth of ImClone stock because her broker told her to. Kelly Loeffler sold four million and then bought $200k worth of Citrix because, you know, online meetings.
I believe members of Congress are exempted from insider trading laws (wow, wonder who wrote that law?) when trading on information they learned as part of their official duties (e.g. classified hearings). It's no coincidence that members of Congress have portfolios that make them all really, really rich once they're in office. So I doubt there's a letter-of-the-law crime here. The crime is one of complete betrayal of public trust, since they were all out in public saying things are great while panic selling behind the scenes. The "remedy" for this in normal times is the ballot box. No resignations will be forthcoming, and the ballot box of broken, so I guess we all get to move on. At least we got Al Franken.