The Trump organization charged the Secret Service exorbitant rates to stay at Trump hotels over a four-year period, a congressional investigation disclosed Monday.

Between January 2017 and September 2021, the Secret Service received as many as 40 waivers to go over the recommended nightly rates. In one case, the agency was charged as much as $1,185 per night—five times over the government limit of $201.

An investigation by the House Committee on Oversight and Reform found the high rates continued after Trump left office.

The new documents, reviewed by a congressional committee, show U.S. taxpayers paid the former president's company at least $1.4 million for the Secret Service's stays.

"The exorbitant rates charged to the Secret Service and agents' frequent stays at Trump-owned properties raise significant concerns about the former President's self-dealing and may have resulted in a taxpayer-funded windfall for former President Trump's struggling businesses," Rep. Carolyn B. Maloney, the Democratic chair of the Committee on Oversight and Reform, wrote in a letter to Kimberly Cheatle, the Secret Service's newly appointed director.

In a Monday press release, the House Committee said it had acquired documents showing that the Secret Service was charged rates in excess of the government rate at least 40 times.

President Trump and his associates, including son Eric Trump had touted staying at Trump properties as a cost-saving option.

The House Committee had previously criticized the former president's conflicts of interests, as well as expressed concerns over the sale of the Trump D.C. hotel to the CGI Merchant Group.