I refer to Dr Ed Peters' blog In the Light of the Law: https://canonlawblog.wordpress.com/2019/01/24/from-msgr-popes-lips-to-the-bishops-ears/ https://canonlawblog.wordpress.com/2019/01/30/on-excommunicating-andrew-cuomo-for-heresy/ https://canonlawblog.wordpress.com/2019/01/25/canon-915s-moment-has-arrived/