I suggest you listen to senator risch dismantle the though of obstruction. Haven't heard a peep of his questions to comey. Wonder why? He puts it clearly. Trump said I hope you can let it go, hope you can let Flynn go. Key word hope. Comey himself says it was certainly not an order. Risch continues that comey has probably seen 100's if not thousands of people arrested hope for certain outcomes. Not one has ever been charged for obstruction or any other charge for hoping for an outcome. Comey has no choice but to agree.
https://youtu.be/yCGmusIu7MY