Whether every priest can excommunicate?

❌ Objection 1 : It would seem that every priest can excommunicate. For excommunication is an act of the keys. But every priest has the keys. Therefore every priest can excommunicate.

❌ Objection 2 : Further, it is a greater thing to loose and bind in the tribunal of penance than in the tribunal of judgment. But every priest can loose and bind his subjects in the tribunal of Penance. Therefore every priest can excommunicate his subjects.