How come there is no "Son of Sam"law for congress people getting rich in office?confie pension for guilty?

We never get follow up from press like "Duke"Cunningham cong.Ca in jail did he repay graft?Does he get his pension?Dennis Hastert sets up this land deal,leaves office cashes in millions.Pa Cong.sets up this program to use coal efficiently and filters through his family proceeds.Prey on honest people that just want to workj and raise a family.