I think probably the idea of inviting the presidential candidates to the Al Smith Dinner is no longer appropriate.  Cardinal Dolan found himself in the unenviable position of literally (and apparently reflexively) turning his back on Trump.  I wouldn't think he'd want to set up that scenario again any time soon.  

I would not invite one candidate and not the other; but if you're going to exclude on the basis of "attacking virtually every Christian value ..." surely you would also exclude, although you do not say so, the racist, fascist, misogynist, serial adulterer who is the nominee of the Republican party.