There's been a lot of animosity between the players and the USGA in recent years. In 2004 at Shinnecock, no one could keep their tee shots to the par 3 7th on the green because the USGA dried it out and cut it too short before the round started. At Chambers Bay in 2015, the greens were really bad. At Oakmont in 2016, Dustin Johnson was penalized because his ball moved when he put his putter next to the ball and the USGA took hours to come to a conclusion and tell him (that rule was subsequently changed). Last year, Erin Hills was way too easy and the fairways too wide. And this year the pin placements were much too hard on Saturday and put in places where a ball could roll off the green that didn't deserve to. Phil wants to win the US Open more than anything to achieve the career Grand Slam. His frustration boiled over and Phil hit his moving ball to make a point that the USGA is trying to make themselves and not the tournament the centerpiece. The Executive Director of the USGA - Mike Davis - is on the hot seat. The players don't like what has become of the US's national championship and Phil is the ring leader. And the USGA keeps messing up every year.