Limited discrimination is not restricted under AIP terms... this is for a
set period during periods of abnormally high traffic... there are various
ways to restrict traffic flow... if this were a permanent restriction.. then
there may be arguments.

This happens all the time when a major aviation convention is in a certain
area. AOPA, SnF, NBAA, etc.

Another way to restrict traffic is to require Prior Approval or a
reservation slot for arrival. Some aircraft can be guaranteed a parking
spot.. others must only drop pax, gas and go..

BT

As you can readily discern, the cause of the closure is apparently
economically based (as opposed to safety based) due to limited
aircraft parking facilities available on the airport. My question is,
why should VFR operations be banned in favor of IFR operations if
discrimination is forbidden under AIP agreement contract terms?

If Friedman Memorial Airport has not received any AIP funding within
the last 20 years, my question is moot, but that's unlikely. The
prime qualification for employment as an airport manager is the
ability to successfully write AIP grant proposals.