The US Open had our hopes up that Congressional would reclaim the US Open territory, to challenge the field and win. Unfortunately, what we saw was a far cry from a difficult course.
The USGA may have had some issues, since the rains were not torrential or absent. Rather they were "softening" rains. They made the course soft enough for the players to go after the pin, and it showed with 21 players under par. While I still think the course did get set up somewhat difficult, it wasn't US Open difficult.
However, there were plenty of US Open courses that were so difficult it gave the pros hell.
I tried to stay away from one time customers, but there was one that I just couldn't resist. So what I looked at was a somewhat consistent challenge to the players.