It makes no sense whatsoever for Congress to suspend aid to the Palestinian Authority, unless, of course, Congress seeks to destroy the Palestinian Authority. Various American politicians, and pro-Israel activists, are lobbying for permanent cut-offs in aid to the Authority, in reaction to the Palestinian push for statehood recognition at the UN. I happen to think the statehood push is the wrong move for the Palestinians, but trying to sink the Authority over this is a most destructive act. The government of Palestinian prime minister Salam Fayyad is the most competent and serious governing body the Palestinians have ever had; serious economic development that has led to the creation of a larger middle class on the West Bank is only one of Authority's achievements. Those who would cut off the Authority's oxygen have to ask themselves: What will come next? A more agreeable Palestinian Authority government? Or chaos?
I suppose supporters of the settlers would like to see the Palestinian Authority disappear. Salam Fayyad is a much bigger danger to them than is Hamas. A powerful West Bank Hamas is what the settlers need to perpetuate their project. But if you're not a supporter of the settlers, and if you believe that a two-state solution is the best hope for Israel's long-term survival as Jewish and democratic state, then why would you possibly seek to undermine the Palestinian Authority now?