The American Citizens Abroad Global Foundation has just launched its educational program with a forum/debate on the merits of Citizenship-based taxation vs. Residence-based taxation.
This is a full day event, sponsored and organized by the ACA, that will be held at the University of Toronto on May 2.
To my knowledge, this is the first public debate — worldwide — devoted to this important topic.
The speakers will include academic tax specialists Bernard Schneider and Michael Kirsh, who have different approaches to the taxation of US citizens abroad, with the program moderated by Toronto lawyer John Richardson.
Dr. Stephen Kish, who co-authored with Mr. Richardson a submission to the U.S. Senate Finance Committee (see below), will be the academic host.
Bernard Schneider:

The End of Taxation Without End: A New Tax Regime for U.S. Expatriates, Virginia Tax Review, Vol. 32, No. 1, 2012, http://papers.ssrn.com/sol3/papers.cfm?abstract_id=2186076

Michael Kirsch:

Revisiting the Tax Treatment of Citizens Abroad: Reconciling Principle and Practice, October 23, 2013, Florida Tax Review, (Forthcoming), Notre Dame Legal Studies Paper No. 1457, http://papers.ssrn.com/sol3/papers.cfm?abstract_id=2346458

Richardson/Kish:

John Richardson, Willard Yates, Stephen Kish, Request for Tax Rules Changes for U.S. Citizens Overseas: Submission to the Senate Finance Committee, January 2014, http://citizenshipsolutions.ca/wp-content/uploads/2014/01/RichardsonYatesKishJan232014SFCSubmission.pdf

For registration and information see: http://www.acaglobalfoundation.org/events?eventId=865796&EventViewMode=EventDetails