Reading this thread several points come to mind here:
Links golf = course built on the link between the sea and the fertile ground - thus sand dunes on sandy soil. Fine grasses, wind is not a necessary aspect per definition but due to their locations most links can be windy, even extremely windy but of course they can have windless days which may be few and far between.
Genuine True Links = don't kid yourselves here there are quite a few completely manufactured links courses that meet the above criteria. Think Castle Stuart and Kingsbarns, even Castle Course. The latter to me is perhaps more similar to Chamber's Bay of the 3. Especially considering some of the slopes etc.
Following the natural contours of the land: GJ, suggested this course followed the natural contours of the land as most links courses do. This is certainly not the case with Chamber's they moved 1.4 million cubic yards of sand and dirt. Now I'm not a mathematician but that's a fair bit, in fact, it's as much as I've ever heard moved in the creation of a course. Whistling Straits moved as a matter of comparison 600,000 cubic yards.
So there is absolutely nothing natural about it. However, that doesn't matter in the end nor does it detract from the fact that they created a course that plays like a links and has fine grasses. It's as close to a links experience as you will get in the US without going to Bandon and it does play very similar indeed.
Links courses in the US: Actually Oregon already has 5 authentic links courses that I know of and have visited. Bandon Dunes, Pacific Dunes, Old Mac, Astoria Country Club and Gearhardt links. These arguably all meet the criteria.
Personally, I'm super excited about Chamber's showcasing it's links (like) course and love the fact that it's fast, firm and baked out. This makes up for the lack of wind they will have. I love the looks of it and I love the fact that it's a US Open that presents other challenges than 6 inch rough and narrow fairways. There will be tons of complaints but not from the guys in the Top 10.
Let the games begin!