Did the DACA "steal" the dreams of earlier immigrants to the USA for medical training or the lack of allotted public funding to educate all who want and have the smarts to become doctors?  

And would affirmative action and diversity have been necessary if all Catholics in the USA would have worked to build authentic inclusive economies and modes of development since WWII - which is actually consistent with our Official Teachings of the Church?  

Perhaps the Supreme Council of the Knights of Columbus could sponsor dialogue sessions in all parishes of the USA to enable our co-creating inclusive economies and modes of development that serve the common good of all God's children.  Then provisions such as affirmative action and diversity wouldn't be necessary.  Meantime - until that is done ... lobby your governments to open up more spaces while protecting the "Dreamers" in a manner consistent with our actual teachings.