Subject: Why isn't the Pauli Exclusion Principle a fundamental force?

If the Pauli Exclusion Principle stops similar particles occupying the same 
location why don't we classify it as a fundamental force? For example, the PEP 
seems to provide the pressure needed to stop a Neutron star from collapsing but 
I'm not clear that any of the standard 4 fundamental forces accounts for this 
force. Yet I thought the fundamental forces should account, ultimately, for all 
forces. Or have I misunderstood what's happening when the PEP stops particles 
getting too close? Many thanks.

Re: Why isn't the Pauli Exclusion Principle a fundamental force?