BobKK47 wrote:
Is there any reason, or regulation, that states that a pilot, flying
VFR, is prohibited in flying a GPS approach to an uncontrolled field
(assuming VFR conditions at the field), or must the pilot fly the
usual pattern to land?

FAR 91.113, 91.126, 91.127, and AC 90-66A seem to be the FAA's guidance
on the subject.