Back in March I contributed to Center for Amerian Progress' report on "Sharia Law." The report can be found here.
But by defining Sharia itself as the problem, and then asserting the authenticity of only the most extreme interpretations of Sharia, the authors are effectively arguing that the internecine struggle within Islam should be ceded to extremists. They also cast suspicion upon all observant Muslims.
It’s important to understand that adopting such a flawed analysis would direct limited resources away from actual threats to the United States and bolster an anti-Muslim narrative that Islamist extremist groups find useful in recruiting.
It would also target and potentially alienate our best allies in the effort against radicalization: our fellow Americans who are Muslim. According to the “Sharia threat” argument, all Muslims who practice any aspect of their faith are inherently suspect since Sharia is primarily concerned with correct religious practice.