"Humanity is greatly diminished whenever the unborn, or the undocumented, the unemployed, the unhealthy are excluded," Cardinal Blase Cupich said.

Pope Leo, a native of Chicago's south side and a long-time fan of his beloved but beleaguered White Sox, sent a video message on Saturday to a sellout crowd attending Catholic Mass in his honor at their hometown ballpark.

At an event celebrating the city's native son, Cardinal Blase Cupich spoke on immigration and the undocumented in his "Sermon on the Mound."