Mulvaney offered the estimate during questioning at the House Budget Committee. He said the White House hasn't yet budgeted for the parade and would either rely on Congress to appropriate funds, or use money that already has been approved.
"The estimates I've seen, they're very preliminary, is between 10 [million dollars] and 30 [million dollars] depending upon the length," Mulvaney said. "Obviously an hour parade is different from a five-hour parade in terms of the cost and the equipment and those types of things."
It was the first cost estimate of the military parade Trump has directed the Pentagon to plan later this year.