It doesn't matter that he had/has a security clearance. He needs two parts: 1) A security clearance commensurate with the information that he is handling, and 2) a need to know. He didn't have a need to know and therefore should not have been handling the information. He also needed to store the information somewhere that was also commensurate with the level of classification of the information. Did he do that? If not, then he should liable to mishandling classified info.
My point was merely about the knowledge he would have had about proper access/storage, etc. of/to classified information due to the fact that he either still had or had a security clearance of some sort due to being the attorney for Petraeus. You are pointing out the further implications regarding what actual clearance he had & as you noted, there are plenty.
Kendall received “special treatment” by the State Department when it was determined that the copies he was holding contained at least one classified record. Very unusual ... he was obviously getting the “kid gloves because it’s Hillary Clinton” treatment. Good article on this at the link - how State tried to accomodate him by providing a safe for his office, etc. Kendall should be in serious jeopardy of going to jail, but he’ll get a ride on Hilly’s coattails (as will Mills, Sullivan, Abedin, Kennedy, etc.) unless a miracle happens & DOJ goes after her along with her partners in crime.
How the State Department Caved to Hillary Clinton’s Lawyer on Classified Emails
http://www.thedailybeast.com/articles/2016/01/15/how-the-state-department-caved-to-hillary-clinton-s-lawyer-on-classified-emails.html