If a local community full of Muslims would rather hold their own court, and implement their own punishments, then yes, I would be in favor of something preventing it from taking root. I'm no politician so I don't know the best way to ensure this doesn't happen. All Americans should be treated under the laws of the United States and the individual states within. In no way should Shariah law be implemented or recognized in our judicial system. People should not receive relief based on Shariah law nor should they be punished based on Shariah.