Deu 17:14 When you come to the land which YHWH your Elohim is giving you, and shall possess it and shall dwell in it, and you shall say, Let me set a sovereign over me like all the gentiles that are around me, 15 you shall certainly set a sovereign over you whom YHWH your Elohim shall choose. Set a sovereign over you from among your brothers, you are not allowed to set a foreigner over you, who is not your brother.
Gen 10:1 These are the generations of the sons of Noah, Shem, Ham, and Japheth. Sons were born to them after the flood.
Gen 35:22 ... Now the sons of Jacob were twelve.
Num 1:2 Take a census of all the congregation of the people of Israel, by clans, by fathers’ houses, according to the number of names, every male, head by head.
Mat 1:1 The book of the genealogy of Jesus Christ, the son of David, the son of Abraham. 2 Abraham was the father of Isaac, and Isaac the father of Jacob, and Jacob the father of Judah and his brothers,
Only those of father's who are of the natives, aliens are to be treated the same, they are allowed to serve in other capacities, however, ONLY a son of a native father is to serve in the highest office of the land.