The whistleblower today has been backed up by others who had direct knowledge, making his or her account now superfluous. John Dean had no such back-up from others; he had to wait a year for his testimony to be fully corroborated by the tapes themselves.
"Nixon's 'Saturday Night Massacre' was clearly a sinister act and effort to kill an investigation. What is not clear is whether Trump has botched this or it is a sinister act."
"The conservative media just doesn't seem to understand the impeachment clause. It is not designed to ... besmirch a president with, and that's all they're doing with it."