Susan McDougal believed that the alt-right Republican party and their zealot right-wing Special Prosecutor Ken Starr were criminally partisan, and she refused to be drawn into the one-sided Mellon-Scaife-funded anti-Clintons travesty of justice from the 'vast right-wing conspiracy" that turned out to be exactly that ("DARK MONEY: The Hidden History of the Billionaires Behind the Rise of the Radical Right" 2017 by Jane Mayer; "The Hunting of the President: The Ten-Year Campaign to Destroy Bill and Hillary Clinton" by Joe Conasen, both 2001 book and the documentary). I applauded Susan McDougal's courage and integrity.
Trump is trying a spoiled-brat destructive toddler's tactic---bully and badger witnesses to his evil deeds (and they are evil), including long-term connections to both organized crime figures (David Cay Johnston, 2016: "The Making of Donald Tr4ump" and his KOMPROMAT that gives the ruthless Russian MAFIA under Putin's control power over Trump to manipulate him (Malcolm Nance, career CIA military officer and expert in counterespionage, 2018: "The Plot to Destroy Democracy").
You are correct in asking why the Congressional Republicans are ignoring the dangerous threat Russian KOMPROMAT and espionage pose when it comes to Donald Trump, but they all uptight when high-powered hugely effective Bill Clinton chose to equivocate (not quite lie, but mislead) about getting fellatio from a consenting adult female power groupie who was brought to D.C. by Oliver North to set up a book deal for former GOP White House aide Linda Tripp (as told to "Larry King Live" by the book publisher and former Nixon "dirty tricks" woman Lucienne Goldberg). The two most vehement anti-Bill Clinton Congressional Republicans, who loudly expressed their "moral outrage": Speaker Dennis Hastert (R-IL), held up by the GOP as a "paragon of virtue"---the high school wrestling coach who is now serving prison time for paying hush money to the teen boys he molested; and Senator Larry Craig (R-ID), rabidly anti-gay, who was arrested at an airport men's room in Minnesota trying to solicit sex from a male undercover police officer.