Treasury Secretary Steven Mnuchin's military plane travel reportedly cost taxpayers nearly $1 million.
Watchdog group Citizens for Responsibility and Ethics in Washington obtained documents through a Freedom of Information Act request.
CREW says Mnuchin racked up that bill in the spring and fall of 2017 on eight trips — both domestic and overseas — on military aircraft.
In a statement, the Treasury Department said CREW's report "consists of falsehoods and mischaracterizations."
The department points out CREW's admission that Mnuchin's travel requests are similar to those submitted by Obama-era secretaries. CREW notes Mnuchin has apparently never used a commercial aircraft while in office and that the Obama secretaries did.