Well, it's good to see the "honest broker" mask fall away, and confirm the USA as the enabler of the worst tendencies of the  State of Israel, even at the cost of the US's own interests.

The move is patently illegal, because  Jerusalem-- whether East or West--does not legally form part of Israel. Israel may have taken in militarily, but might does not make right. 

Live by the sword, die by the sword. 

No regime in modern history can keep the majority population-- in this case, Palestinians-- disenfranchised forever.