Any priest endorsing or opposing a particular political candidate or party is violating the explicit mandates of the USCCB.
From
their website :
Do not endorse or oppose candidates, political parties, or groups of candidates , or take any action that reasonably could be construed as endorsement or opposition.
Apparently unless it’s a liberal candidate, especially if done in a tactful between-the-lines manner, such as with the interestingly timed encyclical.
It is my understanding that if a mandate defies reason, faith, and morals, it is not necessarily binding… correct me if I’m wrong. Nothing defies morality more than open support for mass murder of innocent babies, or the full support of an unrestrained Sodom and Gemorrah society.
Also interestingly enough, among the range of present day atrocities listed in the encyclical, abortion was not one of them. It is interesting because it seems to be an otherwise definitive list.