Proposed Meeting of Major Energy Trading Houses

There is a proposal to have a meeting of the head traders of Enron, Reliant,
Sempra, Coral, Duke, Southern, Dynergy and El Paso. The idea would be to
talk about e-commerce in the energy business. Specifically, Enron might
propose standardization of our masters, start-up of a clearing house for
energy trading, electronic mechanism for confirmations, opening EOL to other
companies to post bids and offers, and discuss electronic protocols for
transactions with other energy companies to reduce costs. We would probably
discuss the state of regulatory restrictions under the CEA.

What are the anti-trust issues for such a meeting?
What are the appropriate parameters for such meeting?
Should legal counsel be in attendance?
Would it be best to make invitations through a formal letter?