I am unaware of D M Neuhaus.  V. interesting person.  Unique.
Yes,  he should do a tour of Poland now and engage the hierarchy especially who are like the American hierarchy supporting the nationalism of our so-called president. 
The universalism of Jesus' message has been compromised.
It is subverted to defend nationalism.
Catholic no longer mean universal to tribal Catholicism.
A poem that greatly impressed me, by a woman New Zealand poet,
"Nationality" this line especially,
"Oh ye, with frontiered hearts, conceive, if you can,
it was not only life he gave up but country for man."

"Frontiered hearts" is a profound phrase. 
Are most hearts "frontiered?"

Whether an RC or not, being catholic is the hope of humanity.
To put humanity, the planet, before one's tribe or nation first.
As Shakespeare says, in another context, "Tis a consummation devoutly to be wished."