Something people, especially progressive, don't seem to understand about the bishops:

The bishops do not have political or government policy solutions to what ails America.  They are simply offering broad moral advice for the public and lawmakers.

The bishops don't have policy solutions to offer.   They don't have a precise solution for healthcare, for immigration, for national defense, for many things else.   

In other words, it's not like they have precise solutions, but are afraid to state them.