The watchdog group Citizens for Ethics and Responsibility in Washington (CREW) has filed a Freedom of Information Act request for records detailing the costs of Treasury Secretary Steven Mnuchin Steven Terner MnuchinShutdown clash looms after Democrats unveil spending bill Lawmakers fear voter backlash over failure to reach COVID-19 relief deal United Airlines, unions call for six-month extension of government aid MORE's trip to Lexinton, Ky., in a government plane around the time of Monday's eclipse.

Mnuchin's wife, actress Louise Linton, drew attention on social media to the trip, during which the secretary gave remarks alongside Senate Majority Leader Mitch McConnell Addison (Mitch) Mitchell McConnellGraham: GOP will confirm Trump's Supreme Court nominee before the election Trump puts Supreme Court fight at center of Ohio rally The Memo: Dems face balancing act on SCOTUS fight MORE (R-Ky.) at a local event.

Linton posted a photo with a description of her designer outfit that included the government plane in the background, which "set off a public firestorm," according to CREW.

One Instagram user scoffed at the pic, saying "Glad we could pay for your little getaway. #deplorable."

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"Pretty sure the amount we sacrifice per year is a lot more than you'd be willing to sacrifice if the choice was yours," Linton replied. "You're adorably out of touch."

She later apologized for the comments.

CREW announced on its website that it was requesting "copies of all records concerning authorization for and the costs" of the Kentucky trip, and any other similar costs for transport in a government plane accrued by Mnuchin since he took office.

"The requested records would shed light on the justification for Secretary Mnuchin's use of a government plane, rather than a commercial flight, for a trip that seems to have been planned around the solar eclipse," CREW said in the statement.