EXCLUSIVE — Sen. Joni Ernst (R-IA) is advancing her push against federal teleworking in a new letter to the Pentagon, demanding that the department present a plan on how to verify if teleworkers are actually working.

In a letter sent on Friday to Lt. Gen. Telita Crosland of the Defense Health Agency shared exclusively with the Washington Examiner, Ernst accuses her of “undermining the mission” of the agency to “placate the parochial interest that is DHA’s employee union.”