I don't know if I am following correctly but from what you was that wouldn't be a veto. If there is any chance that those involved would pass on concerns and info that others might not see by way of educating and passing on their feelings about a person, then that would be negotiation or communicating I think. not veto.
Semantics maybe? If no one is saying, "end it now or else," then its not veto.
Here is a thread
on veto... I just hate to see people get hurt because they are using words that might not be portraying what it is they mean.... sorry, kind of off topic and I might of got what you said wrong, but FYI, just the same.