Wtf are you talking about? At issue is the use of private email accounts, on non-government servers, which both Rice and Powel used before Hillary to conduct official bussiness.
Not only did they both use private emails (which was perfectly legal just as Clinton's servers), they also were found by IG review to have sent at least some classified emails.
This is exactly why singling out Clinton for criminal prosecution for mishandling a handfull of classified emails would have been so egregious. DOJ department has never used these laws except to go after consious leaking of documents. Since no such intent was present, the case against Clinton was dropped.