Rather than link media reports that already number in the hundreds, I'll highlight just one excellent item: The New York Times's spot-on editorial published last night (link here).
The reason Trump gave for firing Comey was that he had bungled the investigation into Hillary Clinton's email practices. The Times piece correctly dismisses as a sham: "The explanation for this shocking move — that Mr. Comey’s bungling of the investigation into Hillary Clinton’s private email server violated longstanding Justice Department policy and profoundly damaged public trust in the agency — is impossible to take at face value."
The piece lays out the core of this latest scandal: "Mr. Comey was fired because he was leading an active investigation that could bring down a president. Though compromised by his own poor judgment, Mr. Comey’s agency has been pursuing ties between the Russian government and Mr. Trump and his associates, with potentially ruinous consequences for the administration."
The editorial also highlights the obvious parallels to Richard Nixon. As Justice Department officials began to close in on the corrupt President, Nixon resorted to firings, and now Trump is doing the same thing.
The piece's main argument is absolutely right on the money: "the only credible course of action would be the appointment of a special prosecutor." I could not agree more.
That is no longer an option. It is absolutely mandatory.