A "standing rule" refers to a permanent or long-lasting rule or policy that is always in effect and applies to a specific situation or group. Full definition
While Western governments could perhaps do more to contain the situations and assist the families, the long - standing rule of no compromise remains. (travelinsurancereview.net)
I am going to break from my long standing rule about posting only about dog training and hunting related topics. (duckdogtrainer.com)
Special standing rules exist for an association bringing a lawsuit on behalf of its members. (nar.realtor)