First I asked the question, "how did the Israeli's miss this and the US". Of course you missed that. Then you should read a history of Gaza:
https://www.britannica.com/place/Gaza-Strip/Blockade
And then consider why Egypt and Jordan don't want the Palestinian's . After all the attacks by Hamas, can you blame the Israeli's for wanting to wipe the strip clean? And by not doing a proper cleansing, Netanyahu is certainly not enhancing his career. Posturing that you will do some cleansing and then don't , won't get you re-elected