Robert David Coolidge has posted a call for a return to "the core" of Islam to unite American Muslims in their diversity. A pdf of his piece "Reasserting the Core of American Islam" is available through Imam Zaid Shakir's website. I have some concerns with his essay, not least of which is his odd contention that Progressive Islam is dead (someone forgot to send us the memo, I guess).  At this time, I will only address his call for a unifying core for American Muslims.  I hope that readers will read his piece and add their own insights in the comments or in the reader blogs.