The matter, according to ABC News, sparked an inquiry by the Treasury Department's inspector general.
The former investment banker and movie producer requested a military jet that costs about $25,000 per hour to fly, ABC News reported.
A Treasury Department spokesman told ABC that Mnuchin requested the jet to make sure he had a secure line of communication during the trip, but ultimately decided the request was "unnecessary" after other communication methods were deemed available.
“The Secretary is a member of the National Security Council and has responsibility for the Office of Terrorism and Financial Intelligence," a Treasury Department spokesman said in a statement, ABC News reported. "It is imperative that he have access to secure communications, and it is our practice to consider a wide range of options to ensure he has these capabilities during his travel, including the possible use of military aircraft."
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