This is one of several reasons I cannot vote for Donald Trump, and one of the reasons I am an uncomfortable Republican. Love and care for the stranger, for the aliens among us, is one of the fundamental attitudes of God, and therefore should be fundamental to God's people. There is no question about what is meant: the Israelites were a foreign people living and working in Egypt during a time of famine and therefore economic hardship in their homeland, and were discriminated against by the Egyptians in later years, to the point of slavery. They were not just visitors to Egypt; they had migrated to Egypt and settled there while poor and needy.
Love and care for the stranger, for the alien among them, was everywhere enjoined upon God's people in the Old Testament, always referring back to this fact that they themselves had once been oppressed aliens in a foreign land. In the New Testament, this concept is brought forward even more explicitly and strongly, in that non-Hebrews were not only to be tolerated, but were also given the right, with the Jews, to become God's people with equal inheritance.
Definition of citizenship and immigration regulations is clearly the right of the sovereign state, but God's people cannot think that advocacy for prevention of immigration, especially the immigration of the poor seeking better economic opportunities, much less the advocacy of restriction of rights to aid and healthcare and education, is Godly advocacy. Do we really think Jesus, if he could vote in US elections, would vote for sending poor families back to their poor land of origin so that we Americans could enjoy a still better standard of living? Is that not precisely what Israel was told not to do?
God is specifically concerned for the poor, and specifically concerned for aliens. The alien poor are doubly his concern, and should be ours also. Sorry Donald, and sorry Republicans, but I can't be with you on this issue.