"The Department must submit all documents requested by March 21 and facilitate Committee interviews with Department officials implicated in this matter by April 30," Congressman Eliot Engel and Senator Robert Menendez said in the letter to Secretary of State Mike Pompeo on Friday.
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The letter accused the State Department of stonewalling past requests for the records and threatened to use "appropriate tools at our disposal to prompt a substantive response."
The letter requested records of nine individuals by name: Christine Ciccone, Makan Delrahim, Sean Doocey, Julia Haller, Brian Hook, Edward Lacey, Matthew Mowers, Margaret Peterlin and Sahar Nowrouzzadeh.
It was not clear whether the officials named had been punished or whether they had participated in a purported purge by the Trump administration of Obama-era holdovers in key positions.