"[Migrants' home and destination countries] should be accompanied by adequate international norms able to coordinate different legislative systems with a view to safeguarding the needs and rights of individual migrants and their families, and at the same time, those of the host countries” (Caritas in Veritate, 62).
Note that he's talking about protecting the needs and rights of the host country.
It must also be emphasized that such cooperation [between home and destination countries] begins with the efforts of each country to create better economic and social conditions at home, so that emigration will not be the only option left for those who seek peace, justice, security and full respect of their human dignity. The creation of opportunities for employment in the local economies will also avoid the separation of families and ensure that individuals and groups enjoy conditions of stability and serenity."
Note the bit there about fixing the problems in the home countries, thus eliminating the perceived need to emigrate for financial reasons.
Thought the above might be of interest to y’all.