Palestinian negotiators have harshly attacked the US over its role in peace talks.
They claim the last seven years have been marked by "mistakes and failures".
The Palestinian negotiating team added that the US was biased towards Israel.
The statement is an unprecedented attack on former president Bill Clinton's policies
The statement did not criticise Mr Clinton directly but singled out his Middle East envoy, Dennis Ross.
Mr Ross and other members of his team "have acknowledged having an emotional commitment to Israel and have said they cannot distinguish between their personal and professional involvement with it," the statement added.
It was not clear how the criticism would affect the Palestinians' ties with the new administration of George W Bush. While Mr Clinton was still in office, the Palestinians were careful not to make their misgivings public.
The negotiating team said, without naming the Bush administration directly, that the US can contribute to peace efforts, "but only if it can learn from the mistakes and failures of the last seven years."