By Justin Sink
Carney also again referred questions about renovations to the General Services Administration, which handles renovations and additions to the White House, saying the agency handled such inquiries "as a rule with renovations and things like that and work being done on this complex."
The GSA has not responded to requests for comment about potential renovations.
The government completed one large-scale building project last year deep below the driveway in front of the West Wing. Although that was described as an upgrade of air conditioning and plumbing systems, trucks regularly deposited large quantities of steel beams, concrete and electrical equipment, leading to speculation that a new bunker was under construction.