There were no injuries reported, but officials believe the disturbance was sparked by recent positive COVID-19 cases at the facility.
In a video that surfaced online over the weekend, the woman was grabbed by the throat and thrown to the ground in a bar in Iceland.
Under the guidance, people who are exposed to someone infected are allowed back on the job if they are asymptomatic.
The senators want a written explanation for the removal of the intelligence community inspector general who flagged the Ukraine complaint.
Federal prosecutors say Peter Lucas, 35, stole at least four boxes each containing 50 surgical masks from the facility in March.
