David Tepper,
Random members can't speak "officially" for any club,
just as random employees can't speak for governments or employers.
The I.R.S. even advises taxpayors not to rely on verbal communications with its employees regarding tax matters.
In most organizations, a designated individual or individuals are charged with speaking for the organization, "officially".
With respect to unofficial communications, each member of a club is free to exercise their constitutional, freedom of speech, rights. They can express their personal opinions.
There may be a higher degree of scrutiny, by their fellow members, with respect to how responsible or prudent their comments are, but they are free to speak.
Some may choose not to comment, others may choose to be diplomatic, such as Weill and Chennault.
Could there be more solidarity amongst the members than the media has led you to believe ?
You also have to ask yourself, has anyone who has ever spoken on a high profile issue, been misquoted, to their embarrassment, and to the embarrassment of others ?
If you were a member, what would you say to the press ?