Whatever Comey, et al may or may have done has no bearing on this case, but here's a thought: For some time Republicans controlled the presidency and both houses of congress. If there was anything to prosecute, why weren't a least some of these individuals prosecuted at that time?
And maybe you ought to ask Trump why he didn't have Hillary prosecuted as he promised.
You know the answer to that as well as I do. Or... you 'should' know. Because the deep state has morphed into a very powerful, too powerful, entity in America (duh). Trump probably was informed that the DOJ would never go after Hillary. That would be the very definition of a GOP wet dream.
Further to that, Comey skating for lying to Congress has everything to do with the subject at hand... which is Democrats skating for lying to Congress while anyone 'else' gets nailed. FFS... this is logic, not rocket science.