Cite one factual source.

HuffPost’s $10.7 million tally is based on a 2019 report by the Government Accountability Office breaking down the costs of Trump’s first trips to Mar-a-Lago, his Palm Beach, Florida, country club, during his first term. The GAO calculated a total cost of $3,383,250 for each trip. About one-third of that was the flight cost of Air Force One for the round trip, with additional expenses for flying down vehicles, including two presidential limousines, for Trump’s motorcade and reimbursing the Coast Guard for stationing a gunship in the Atlantic Ocean just off the coast and heavily armed boats in the Intracoastal Waterway. Those costs are based on 2017 dollars and are likely somewhat higher today.