I have never heard this term before reading this article, but it makes complete sense. Foreign policy is such a different game form domestic policy. It does require a unified front. Imagine how the cold war would have turned out if the politicians would have aired out their differences on both sides of the isle. We would have come across as weak, never been able to convince the Western world that democracy and capitalism were the right way, and we would have likely conceded to the Russians. We would have at least seen our country torn to shreds by fighting the proxy wars we did on our own. Presenting a unified America was the only way that the country became the super power that it did.