“Ukrainegate follows exactly the same pattern as Nixon’s 1968 machinations, Reagan’s alleged 1980 Iran plot, and Trump’s overtures to Russia in 2016: In all four cases, a Republican candidate solicited foreign interference in a pending election. If Republicans tolerated the earlier offenses, then why should they impeach over Ukrainegate? In the context of this history, Ukrainegate is no scandal but Republican standard operating procedure.”
https://www.thenation.com/article/nixon-impeachment-mcfarland-pardon/