A Democratic senator introduced legislation on Friday that would mandate Trump administration officials share their travel schedule and flight class publicly in an effort to curb improper government spending.

The Federal Travel Transparency Act introduced by Sen. Tammy Duckworth Ladda (Tammy) Tammy DuckworthMcConnell focuses on confirming judicial nominees with COVID-19 talks stalled Biden courts veterans amid fallout from Trump military controversies John Fogerty: 'Confounding' that Trump campaign played 'Fortunate Son' at rally MORE (D-Ill.) seeks to prevent federal officials from misusing taxpayer dollars. The bill specifically nods to the heads of the Interior Department, Environmental Protection Agency (EPA) and Treasury Department, all of whom have been criticized for extravagant travel on chartered planes or in first class.

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"Every public servant has a responsibility to be a good steward of public dollars but it’s clear that Donald Trump Donald John TrumpBubba Wallace to be driver of Michael Jordan, Denny Hamlin NASCAR team Graham: GOP will confirm Trump's Supreme Court nominee before the election Southwest Airlines, unions call for six-month extension of government aid MORE and his Cabinet secretaries do not always see it that way,” Duckworth said in a statement. “When Trump Administration officials spend thousands of taxpayer dollars to charter a private or military plane or purchase a first-class ticket, they should — at the very least — be required to tell the American people who are bankrolling their luxurious travel why it is necessary."

Specifically, the bill would require the government to disclose on a public website the official air travel activities of agency leaders every few months. The disclosures would include trip duration, destinations and the number of employees on the trip as well as justification for the travel and the associated costs.

Duckworth argued that the new process established under the bill would cut back on Freedom of Information Act (FOIA) requests made for travel summaries and in turn save government resources and time.

A number of government agencies including the EPA and the Interior Department have blamed a backlog in FOIA requests for slow response times, often coming months later than legally required.

A government watchdog is investigating Interior Secretary Ryan Zinke Ryan Keith ZinkeTrump extends Florida offshore drilling pause, expands it to Georgia, South Carolina Conspicuous by their absence from the Republican Convention Trump flails as audience dwindles and ratings plummet MORE for using taxpayer-funded charter and military planes to travel between work events and personal and political appearances, including a trip he took to Las Vegas over the summer to talk to a professional hockey team. The department is also under fire for signing off on a $139,000 project to update doors in Zinke's office.

EPA administrator Scott Pruitt Edward (Scott) Scott PruittJuan Williams: Swamp creature at the White House Science protections must be enforceable Conspicuous by their absence from the Republican Convention MORE is under fire this week for spending $105,000 on first-class flights in his first year in Washington, which does not include the cost of first-class travel for his security team. A government watchdog also previously filed an ethics complaint against him for authorizing the EPA to spend what is now estimated to be $43,000 to build a soundproof booth in his office.

EPA declined to give a comment but pointed to interview's Pruitt previously did with CBS and Portland-based radio host Lars Larson, where the administrator said his next flight would be on coach, and compared his international travel total to that of his predecessors in the Obama administration.

Interior did not respond to a request for comment.

The House Oversight and Government Reform Committee, led by Rep. Trey Gowdy Harold (Trey) Watson GowdySunday shows preview: Election integrity dominates as Nov. 3 nears Tim Scott invokes Breonna Taylor, George Floyd in Trump convention speech Sunday shows preview: Republicans gear up for national convention, USPS debate continues in Washington MORE (R-S.C.), has requested information from both departments regarding Zinke's and Pruitt's spending. Gowdy sent his request to Zinke Friday. EPA says it has responded to Gowdy's request.

Duckworth argued that her bill would help bring transparency to Cabinet officials' spending practices.

"By shining a light on the travel practices of Trump Cabinet officials, this bill would protect taxpayers from the Trump Administration’s wasteful spending on needless luxury travel," she said.