Originally Posted by jonny1
I don't believe that is correct, my understanding is that it would be in force for all golf at all levels, any sort of competition, they would be banned.
Not at all. The USGA and R&A are completely separate entities from the PGA Tour. The US open is the only event on the PGA Tour that is sanctioned by the USGA. The PGA Tour makes, and enforces their own rules.