Bottom line.... THERE IS ABSOLUTELY NO place in The Constitution for sharia law.... PERIOD!
We are Americans and we all SHOULD be dealt with in the same manner, under the same laws.
I disagree in part and agree in part. If Sharia Law calls for the execution of a person for an act of sexual misconduct, anyone who tried to enforce that decision in the US would be guilty of attempted murder. Just as any other religious person, an American Muslim must abide by US law first and his faith second when he makes choices that impact the rights of others.
BTW, to the best of my knowledge, this is exactly what does happen now.
On the other hand, if two adults who are American Muslims wanted to submit their property line dispute to a religious court rather than a local civil court, I see no reason why they should be prevented from doing so.
Even with property laws, the Muslims shoud follow the law of their community, county, state, or whatever because property lines are a matter of permanent public record and should be uniformly established and adjudicated. There should not be one set of laws for Muslims and another set of laws for everybody else. That is a slippery slope we should never allow ourselves to start down.
Muslim, like everybody else, are free to use whatever non violent and non coercive means they wish to mediate a dispute and come to an agreement. But they should have to file the same paperwork under the same laws as everybody else.
Having once worked in a law office that, among other things, did a lot of title searches, I can't imagine the nightmare that would result from different laws applying to different people in the same general area.