For those of you asking "what is Canon 915?", "Those who have been excommunicated or interdicted after the imposition or declaration of the penalty and others obstinately persevering in manifest grave sin are not to be admitted to holy communion."

The number of people currently excommunicated or placed under interdict approaches zero as a limit. Cupich agrees with Pope Francis that being divorced and remarried is not an automatic bar to the Eucharist. Thus, it really is a nullity.