You are over-estimating the importance of Arabs to America in 2017. Saudia lowered Gas prices and devastated the Shale Gas industry. Conservative American always despised the Arabs but tolerated them due to the financial benefits but with the Oil industry profits no longer delivering the Arabs are not as important.
OIC carries no political clout or ground support among the Muslim Ummah so there is no reason to appease the Arabs (politically) either.
IF the Muslim NATO plays a powerful role in War on Terror then maybe the Arabs will gain some leverage.
Israel wants America to move the embassy and it will happen at some point.
This cannot be undone and I am sure it will be greatly appreciated.