The Branch Davidians were a cult that was not allowed to live as they wanted. Sharia Law is anathema to the US Constitution. It remains to be seen if the Islamic cult will be allowed to live as they want.
Congress can impeach a judge. Congress can defund the judiciary (except for actual judge’s salaries. But they can defund clerks and others that work for bad judges. They can shut down bad courts, like DC & SDNY.
Are you expecting more?