David Yerushalmi has written the comprehensive explanation of what Shariah Finance is, and why it is a threat to free people. From his Law Offices’ website:
In November 2007, the Center for Security Policy retained the Law Offices of David Yerushalmi to prepare a legal memorandum which examined the civil and criminal exposure of U.S. financial institutions involved in Shariah-compliant finance (SCF). This memorandum was shortened and published by the Utah Law Review in Vol. 2008, No. 3. You can access the article directly here.
The article, “Shari”ah’s ‘Black Box”: Civil Liability And Criminal Exposure Surrounding Shari”ah-Compliant Finance,” can be found in pdf form at that link. If you are at all interested in becoming informed on this all-important subject, this article is the single best resource.