US has the power to enforce an end to the occupation and sanction Israel. But choose to do the exact opposite: provide bombs and aircrafts, billions of dollar in millitary aid. To not talk about selecting Israel American dual citizen zionists and even former IDF servicemen into the highest US Government positions. Even selecting vile zionists as US Special Envoy for Palestine.
And this list is only the beginning. Is it allowed in the state you reside to boycott or critize Israel? If you want a public sector job.
USA has to be shown how it is in its national interests to pursue a different policy. Thus far the Arabs have failed to do so. The failure of politicians lies not with USA here.