Interesting. Why the rush to get back to Hazeltine?
2020: Whistling Straits
2024: Bethpage
2028: Hazeltine
2032: Olympic Club
1. Money. Every time the Open, PGA or Ryder Cup goes to Hazeltine, they set revenue records.
2. Ease of infrastructure. Hazeltine is still on the far outskirts of Minneapolis, with plenty of room for tents, cars, people, equipment and concessions.
3. Rabid (but relatively well behaved) spectators. Minnesota does not have a regular PGA Tour stop, so the majors are treated like Super Bowls by the local golf fans. Yes, there were some obnoxious characters in the gallery in 2016, but Bethpage will probably make those crowds look like church choirs.
4. As Brian mentioned, weather. You could not possibly improve on the three days of autumn sunshine experienced in 2016.