Religious freedom actually has limitations. You can’t use religious laws in a court of law. You can’t violate the laws of the land in the name of freedom, e.g. child sacrifice.
Shariah law goes against the constitution of the US. They can poor as many millions as they want down the money hole. If they try to instigate it with any actual legal authority, the SCOTUS will be a brick wall for them, if it even gets that far.
we cannot have different laws for different people
Of course, with leftists running the show its hard not to notice that we already have