Washington does not accept the legitimacy of the West Bank enclaves and wants to see their construction halted "forever."Forever can be a long time. Americans can remember a history of a few centuries. There have been people of European stock in America for a bit more than half a millennium. Latin was the main language in Europe for, what, a thousand years? Islam has been around for almost 1,500 years, and Christianity for 2,000. The European Union got into stride a few decades ago; there is reason to hope that the United Nations in its present form won't last even one century - though it probably will. But I wouldn't bank on 500 years.
There have been Jews in Eretz Yisrael, if you believe the archeological evidence, since at least 3,000 years ago. Seen in that context, settling or not settling "forever" is probably a bit of a stretch.