The Treasury Department's Office of the Inspector General confirmed Thursday it is reviewing the flight Treasury Secretary Steven Mnuchin and his wife, Louise Linton, took aboard a government aircraft to Louisville, Ky., the day of the solar eclipse last week.

"We are reviewing the circumstances of the Secretary's August 21 flight … to determine whether all applicable travel, ethics, and appropriation laws and policies were observed," counsel Rich Delmar told the The Washington Post.

"When our review is complete, we will advise the appropriate officials, in accordance with the Inspector General Act and established procedures," Delmar said.

The Citizens for Responsibility and Ethics in Washington requested government records into the trip because it seemed "to have been planned around the solar eclipse." That region of Kentucky had 95 percent coverage, making it a prime spot to watch the historic eclipse.

Cabinet officials are supposed to fly commercial when it is possible and are permitted to use government aircraft on rare occasions, including international flights.

The Treasury Department has defended Mnuchin's travel that day as he stopped at a Louisville chamber luncheon and America's famous gold stash at Fort Knox. Treasury Department officials said Mnuchin is watching the eclipse at the Army base with Linton and Senate Majority Leader Mitch McConnell, R-Ky., was planned around "official government travel."

Linton brought attention to the couple's travel to Kentucky after posting a photo on Instagram bragging about her designer outfit and accessories.

When an Instagram follower commented that she was "deplorable," Linton responded harshly to the woman.

"Did you think this was a personal trip?! Adorable! Do you think the US govt paid for our honeymoon or personal travel?! Lololol. Have you given more to the economy than me and my husband? Either as an individual earner in taxes OR in self sacrifice to your country? I'm pretty sure we paid more taxes toward our day 'trip' than you did," Linton wrote.

Linton, who married her husband on June 24, also thanked her detractor for the "passive aggressive nasty comment" and said the woman's children and life look "cute."

Her photo and response prompted headlines and heavy backlash.