It's a political calculation. Indicting Comey, et.al. now would look like a political prosecution to consumers of MSM and could cost Trump votes. If Trump then lost, the cases would be dropped anyway. Waiting incentivises Trump voters to return him to office, not that we need any more reasons to vote for him; but it doesn't alienate potential undecideds, who may decide in Trump's favor. It would have been great if indictments could have been brought down early in his first term, but given that that didn't happen, perhaps this is the right approach. My $.02.
