Shariah law has entered into many state court decisions

Also, seen this?

Shariah Law and American State Courts: An Assessment of State Appellate Court Cases

The study’s findings suggest that Shariah law has entered into state court decisions, in conflict with the Constitution and state public policy. Some commentators have said there are no more than one or two cases of Shariah law in U.S. state court cases; yet we found 50 significant cases just from the small sample of appellate published cases.

Others have asserted with certainty that state court judges will always reject any foreign law, including Shariah law, when it conflicts with the Constitution or state public policy; yet we found 15 Trial Court cases, and 12 Appellate Court cases, where Shariah was found to be applicable in these particular cases.

[h/t Cuz BD for the link]