I think Comey’s decision to ‘investigate’ the Clinton matter a few months before the election was so that he could exonerate her just before the election to give her a sympathy boost.
He was playing politics in order to try to help Clinton win the election. Sessions did say today that the most important aspect of a country was the ‘rule of ‘law’. Prove it and indict Comey. And that’s just for starters.
Comey got orders from Obama to absolve Hillary: http://www.nationalreview.com/corner/451053/not-comeys-decision-exonerate-hillary-obamas-decision