The administration of US President Barack Obama is concerned that politicians may freeze about $140m in funding for the Palestinian Authority's Security Services.
The US congress has already blocked $200m in development aid, following the Palestinian campaign for UN recognition.
Co-operation between the Palestinian Authority Security Forces and the Israeli military is at an all-time high, but analysts say a funding freeze could impact the security in both Israel and Palestine.
Al Jazeera's Charles Stratford reports from the occupied West Bank.
