If a nation elects a president to govern, then it makes sense that the president should govern in the interest of his or her biological people (humanly speaking). The spirit of Nationalism also equates to democracy.
Nations are not what they used to be in terms of genetic heritage. The mix is more complex & degenerated. The multicultural-countercultural relationships trade on & trade off.
World events & the scattering of the peoples & regathering, like the wind that blows back & forth & round & round...while God's unchangable ways confound those locked in to nature or false gods.