I have to wonder what the Church's motivation is for publishing this letter. Maybe the AZ Catholic Church should focus on the problems facing their own clergy first? Good grief this is absurd.
That letter is essentially a reiteration of the Church's long standing position. It's been so for years and is available on the web. Just Google, Catholic Church Illegal Aliens. It's quite eye opening. You will see quickly that the church truly has been running an Underground Railroad for Illegals for many, many years.