These are all from Donald Trump:
January 27, to James Comey: “I need loyalty. I expect loyalty.”
February 24, to Comey: “I hope you can see your way clear to letting this go, to letting Flynn go.”
Over the next two months, Comey declines to let Flynn go. On May 9, Trump fires Comey.
May 11, to Lester Holt: “Regardless of recommendation, I was going to fire Comey knowing there was no good time to do it. And in fact, when I decided to just do it, I said to myself — I said, you know, this Russia thing with Trump and Russia is a made-up story. It’s an excuse by the Democrats for having lost an election that they should’ve won.”
I’m no lawyer, but what more do you need? As Ben Wittes says of Comey’s testimony confirming his conversations with Trump, “It is the most shocking single document compiled about the official conduct of the public duties of any President since the release of the Watergate tapes.”