1) Platform diving
Ed Lasky writes that President Obama knew that there was no mention of Jerusalem and still approved the publication of the platform like that.
It was only when blowback occurred that could hurt his political prospects that he stepped forward and inserted the language to assuage critics.Furthermore Lasky writes (in agreement with what Shmuel Rosner wrote) that it was likely Robert Wexler who contributed the language about the Middle East.
Rick Richman showed that the administration has a history with Jerusalem: