Sooo, God and migrants. Any instruction from him or guidance about how we should behave? Possibly this? Ezekiel 47. Bit of a stretch I suppose but it made me think. Do I own where I live? Own it enough to deny the needy access to it? Not so sure I do to be honest.
Divide it up as your inheritance, and include in it the resident aliens who have made themselves at home among you and now have children. Treat them as if they were born there, just like yourselves. They also get an inheritance among the tribes of Israel. In whatever tribe the resident alien lives, there he gets his inheritance. Decree of God, the Master.