Obama administration worried about impact on Palestinian Authority after US lawmakers block some $200 million in 2011 aid.Washington -The Obama administration is lobbying Congress to unblock $200 million in aid for the Palestinian Authority that was frozen due to its bid for UN recognition of statehood over US and Israeli objections. State Department spokeswoman Victoria Nuland said on Monday the administration was in "intensive" discussions with key lawmakers who had put holds on the money, a financial lifeline for the fledgling Palestinian government-in-waiting. "We still have some money in the pipeline but the concern is that if we don't get...