Per John B's comments, maybe the USGA should have changed the tournament to a 25 years & older/mid-am event.
I grew up in Monmouth County, NJ, in the 1950's & 60's not far from Hominy Hill. When the course was built in the 1960's it was a very private/personal course (designed by Robert Trent Jones) built for Henry Mercer, a shipping magnate. He used the course mostly (and very rarely) to entertain his business clients. I can't remember seeing anyone ever playing the course back then.
From Mr. Mercer's NY Times obituary in 1978:
"As a successful businessman, Mr. Mercer was named a director of the Chase Manhattan Bank, the Magnavox Company and the Republic Steel Corporation. But he went beyond the corporate world to develop a prize‐winning herd of Guernsey and Charolais cattle at Hominy Hill Farms in Colts Neck, N. J. His interest in golfing led him to commission Robert Trent Jones, the golf architect, to design and build a private course for him‐the Hominy Hill Golf Course‐which was sold to Monmouth County two years ago for $2.6 million."