Not true in all cases. That is what the NC ruling is all about. If the NCSSC upholds the lower court ruling, it means (in NC at least) that CPS is exempt from probable cause as well as habeas corpus. They would need no intervention by the courts before confiscating your children. Furthermore, as long as the NC ruling is not struck down by another court, it can be used as a precedent by attorneys representing CPS's in any other state. Be afraid, be very afraid.