GPS is based on a small number of satellites in high orbit, so it's not practical to disable it for a particular region like it is for Starlink and other LEO satellites.
https://en.wikipedia.org/wiki/GNSS_jamming: “GNSS jamming, including GPS jamming, is an act of overwhelming global navigation satellite systems (GNSS) receivers with powerful radio signals that drown out the signals from the GPS, GLONASS, BeiDou, or Galileo satellite constellations“