Those were bad, but there are differences that matter: The law has changed. Requirements were less strict back when email was new and exotic. We don't punish p

Those were bad, but there are differences that matter: The law has changed. Requirements were less strict back when email was new and exotic. We don't punish people for violating laws passed after the not-yet-crime is done; this would violate the constitution. Bush and Powell were not under investigation, and thus didn't destroy evidence while under investigation. Bush and Powell didn't have the issues with classified material, possibly excepting one disputed Powell email.