Henry M. Robert, Robert's Rules of Order
“ The Right of an Assembly to Eject any one from its place of meeting. Every deliberative assembly has the right to decide who may be present during its session, and when the assembly, either by a rule or by a vote, decides that a certain person shall not remain in the room, it is the duty of the chairman to enforce the rule or order, using whatever force is necessary to eject the party. ”
