Washington (CNN) The White House has hired a college senior to a top post in the Presidential Personnel Office amid a sweeping effort to carry out President Donald Trump's desire for a staff of loyalists, a source familiar with the hire tells CNN.

James Bacon will work for Trump's new personnel chief, John McEntee, who recently took over as director of the Presidential Personnel Office after a stint as Trump's body man. Bacon, 23, attends George Washington University, according to Politico, which first reported his hire

The move is likely just the beginning of the Trump loyalists McEntee will continue to hire, the source said.

Earlier this month, the President instructed McEntee to focus on rooting out disloyal officials, a charge that prompted the personnel chief to tell agency officials at a recent meeting that his office will be on the lookout for staffers who are seen as disloyal.

Another official said McEntee indicated he plans to first aim his efforts at the State and Defense departments. He also told the liaisons that promotions and significant staff changes should not occur without prior approval from the Presidential Personnel Office.

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