They were national security and foreign policy, both of which involved other nations, which made desirable a perception of unity on the part of the president and his cabinet, no matter who was in power. That meant that dissent from individual politicians should never rise to the level of pitting one party against another on the basic Establishment view of what was desirable in terms of U.S. national interests.

That viewpoint has survived at least somewhat intact to this day, even weathering the turmoil of Vietnam, but the apple cart has been somewhat upset by new players in the game, namely the various federal bureaucracies, to include law enforcement, intelligence and the Pentagon. The 2016 election demonstrated that the FBI and CIA in particular were willing to get involved in the game of who should be president, and in so doing they compromised major foreign policy and national security norms, which produced Russiagate as well as the wildly inflated current claims being leveled against China and Russia and even Iran looking ahead to elections in November.