If this is true, then put them to work building affordable homes and schools.
Problem meet solution.
But what if they don’t want to do that? What if the widow has fled with her eight children from her war torn country because the male provider was killed? Is it fair to ask her to give up raising her right children to be a brickie?
What POLICY should be in place to provide the “permission to migrate” (to use OP language), and what can you do to enforce it?
Or, do you simply open the border to all citizens of earth and stop being hypocritical, as one poster noted?