One of my favorite Catholics, John Zmirak, analyzes how some Church leaders view immigration policy and what should really be considered. MUT’s must-read post.
There is a Catholic teaching on immigration, and it is grounded in natural law, not divine Revelation. The Church does not aspire to rule as a theocracy which imposes beliefs that only those gifted with the supernatural virtue of Faith can understand. We may not, without sin, use our neighbors’ tax money and employ the guns and the jails of the State to enforce laws based solely on verses from the bible or quotes from Our Lady at Fatima.
Nor do we have the right to favor immigration because many of the immigrants are Catholics and we feel a spiritual kinship with them. That is blatantly unfair to our non-Catholic fellow citizens, whose ancestors admitted our Catholic forefathers on the understanding that they would be loyal citizens, not secret agents working for their fellow Catholics around the world regardless of the best interest of Americans. We cannot flush the natural virtue of patriotism down the toilet of religious (or racial) tribalism (unless we want to prove that the Know-Nothings were right when they tried to keep Catholics out).