You're asking whether Kerry should be excommunicated. (That's what the word means.) I don't know. Does the Catholic church ever excommmunicate anyone nowadays? Have they ever excommunicated anyone over the abortion issue? Who exactly has the authority to excommunicate people? (Bishops, I assume.) If one bishop, say, decides to excommunicate somebody, does the excommunication apply everywhere, or can the person still take communion in a different diocese?