Well, if we accept ST09's information about Sarek as applicable to the Primeverse, then we have direct evidence of Federation Members exchanging ambassadors amongst themselves: Sarek describes himself as Vulcan Ambassador to Earth. Vulcan and Earth about Federation Members; ergo, we have evidence of that happening.
I though that we were treating an ambassador from one Federation world to another as a separate category from an ambassador from
the Federation itself to a member world.
We were, but I misunderstood what you were saying. When you said, "I don't think there's any evidence of that happening," I thought that the "that" in your sentence referred to the exchange of ambassadors between Federation Members. Sorry for that misunderstanding!
There really isn't. We've seen ambassadors amongst Federation Members (Sarek), but never ambassadors from Members to the Federation itself.
Not directly, but we've seen ambassadors representing their worlds at Federation-wide events like the Babel Conferences. Assuming it's the Federation government holding the conference, it seems to be in the ballpark.
I hesitate to take anything in "Journey to Babel" was evidence of how the Federation normally operates. "Journey to Babel" makes it clear that the situation is highly unusual, and that the Federation is on the verge of a civil war over the issue of admitting Coridan to the UFP.
We know that the Federation called upon its Members to send ambassadorial delegations to Babel to determine the issue, and we know that the ambassadors will obey the instructions of their Member governments (which is one of the difference, btw, between a federal legislator and an ambassador -- legislators don't answer to their provincial or state governments, but instead to their own voters, who simply happen to be the same constituents as the provincial governments, because they are representatives of the people of the province, not of the province itself). But the implication seems to be that calling that conference was a very unusual situation (Sarek even being called out of retirement for it), and not par for course for the Federation.
The film itself never mentions Federation Council members' titles.
Yes, I know that. I'm not talking about anything explicitly stated in the film. I'm talking about my interpretation of what
Articles of the Federation seemed to be
implicitly suggesting about what we saw in the movie by the way it described similar debate processes among Council members in the book.
I'm not sure I understand why you interpreted
Articles as implying anything about the titles of the Council members in
Voyage Home. I had inferred that it might have been that you interpreted seeing two ambassadors debate in
Voyage Home as implying that Council members debating on the floor in
Articles were titled as ambassadors as well, but you indicated later that that was an erroneous inference of your interpretation.
Edited to add:
There really isn't. We've seen ambassadors amongst Federation Members (Sarek), but never ambassadors from Members to the Federation itself.
Well, we have seen ambassadors from the Federation itself to the Members, however. "In a Mirror Darkly" tells us that our-universe Jonathan Archer was Federation ambassador to Andoria in 2169.
Actually, "In A Mirror, Darkly" only calls him "Ambassador to Andoria." It never states
whose Ambassador to Andoria he was. It's more than possible that he was serving as United Earth Ambassador to the Andorian Empire, for instance.
And, frankly, I'm reluctant to accept a barely-legible piece of info on a computer screen as being canonically binding, especially when the thing it establishes defies logic. Why would the Federation
need an ambassador to its own political subdivisions? Australia doesn't send an ambassador to New South Wales.
It stands to reason that the reverse (an Andorian Ambassador to the Federation) would also be present.
Not really. What would be the point of having an Andorian Ambassador to the Federation when you already have the Federation Councillor from the Andorian Empire? It would be like the Province of Quebec sending an ambassador to Canada.
ETA: and the Ambassadors from "The Forsaken" are unclear. Memory Alpha reports two of them as being ambassadors to the UFP (Arbanzan and Vulcan specifically), and one of them (Bolian) as being an ambassador of the UFP.
The
script for "The Forsaken" only refers to them as "a delegation of Federation ambassadors on a "fact-finding" mission to the wormhole." A quick search of the script reveals no elaboration upon them as being ambassadors of Federation Members rather than the Federation itself; they're merely referred to as "ambassadors" in the rest of the script except for one instance, when they are again referred to as "Federation Ambassadors."