The perfect govt employee ... she has no trouble lying with a straight face.

Sen. John McCain has hired a controversial Syria analyst who recently was fired by one D.C. organization and resigned from another after it emerged that she inflated her academic credentials.

The Republican senator's office confirmed to Fox News that Elizabeth O'Bagy was hired as a legislative assistant, and will start work next week.

“Elizabeth is a talented researcher, and I have been very impressed by her knowledge and analysis in multiple briefings over the last year. I look forward to her joining my office," McCain said in a statement.

O'Bagy's pro-Syrian opposition research was used by hawkish lawmakers, including McCain, to build the case for intervention against the Assad regime in Syria.