Nixon's the one
Wow. According to Mother Jones, Trump's former national security adviser K.T. McFarland cited Nixon to justify Michael Flynn's back-channel shenanigans with Russia:
To justify potentially illegal secret contacts between the Trump team and Russia [to the FBI], McFarland, who herself worked on Nixon’s National Security Council, cited perhaps the most notorious example in US history of a White House candidate undermining the diplomacy of a siting president. (McFarland’s comparison is also flawed because Nixon’s interference, and the Reagan team’s alleged actions, occurred prior to Election Day, not during the transition.)
While allegations that Reagan aides meddled in hostage negotiations in Iran remain disputed, Nixon’s secret disruption of Vietnam peace talks is well-documented. Recently revealed notes show that in October 1968, Nixon asked H.R. Haldeman, who became his chief of staff, to “monkey wrench” talks between the United States, South Vietnam, and North Vietnam and to instruct an emissary, Anna Chennault—a prominent Republican and socialite in touch with South Vietnamese negotiators—to urge them to “hold on” and refuse to agree to a deal in hopes of getting better terms under Nixon. Nixon feared that progress in talks would help his Democratic opponent, Vice President Hubert Humphrey, who surged late in the race as he amped up his criticism of the war.
Nixon’s skullduggery worked for Nixon. Encouraged by him, the South Vietnamese stalled the talks, and Nixon narrowly beat Humphrey. But the consequences were bad for everyone else. Nixon had suggested he had a plan for exiting Vietnam. Instead he expanded the war. Roughly 22,000 more Americans, along with far more Vietnamese, would die before the US finally withdrew from the country at the start of Nixon’s second term in 1973. Nixon’s initially secret bombing of sites in Cambodia in 1969 may have helped spur the rise of the Khmer Rouge, who went on to kill an estimated 2 million Cambodians.
Nixon’s predecessor, Lyndon Johnson, knew of Nixon’s actions and privately called them “treason.” John Farrell, who discovered Haldeman’s notes while researching a 2017 Nixon biography, told Mother Jones that Nixon’s interference was potentially “worse than anything he did in Watergate, because more lives were at stake.”
The GOP is Nixon's party. It always has been.