The kind of power that supports the Palestinians manifests slowly, but not gradually. It takes a long time to get to a tipping point, and before it does, nothing really changes. Apartheid goes on, settlers continue to rampage, Congress continues to flood Israel with money and the Palestinians with condescending criticism, Gaza continues to be a giant open-air prison. 

But fortunately for the Palestinians, the U.S. is not the key to Palestinian liberation. The Palestinian people are.