I have no particular view of Chambers Bay, other than being pleased that the Pacific NW has finally gotten a US Open. The course I know only from Richard's fine overview, the set up for the championship I know only from posts on here and interviews with Mike Davis.
But it suddenly hit me as clear as a bell: this is an American links course. Money is no object, and yet it is the object -- and after spending truckloads of it nothing can be left to chance.
So, instead of allowing nature and the wind to do what it will and affect the play as it might, and thinking about fairways and greens and hazards in that context (as in GB&I), at Chambers Bay the architect and the USGA have instead created formalized flexibility.
Here, this massively long course can be adjusted day by day by moving tees way up or way back, and if that wasn't enough the word is put out that par will be manipulated as well. Also, instead of having as the original links courses do very large and somewhat undulating (but sometimes quite subtle) greens such that they will be more or less challenging depending on the wind conditions, at Chambers the greens are massively and permanently contoured, so that every day, day in and day out, the challenge will be there.
An interesting fundamental difference in approach: very old links (for the Open) that continue to play differently from one day to the next because of nature, and a very new links (for the US Open) that can play the same every day because of the hand of man.
Peter