Does the WAC over ride the States Fishing rules? confused

In the 2002/2003 fishing regs it states, a fish must be hooked in the mouth to keep.

Apparently in the WAC #220-56-215 is says in the mouth or in the head.

Some posted WDFW signs say in the mouth. beathead

Before I jump on someone trying to keep one hooked in the head mad I want to be correct.
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