Department of the Interior

The Department of Interior might not seem like an important target for DOGE - the tech titans aren’t as interested in extracting oil and gas or lumber - but the head of the DOGE team at the agency comes from an oil industry background. More recently, DOGE has been focused on getting super-user access for a payroll system provided as a shared service for half of the agencies in the federal government.

People

Information: Click items to expand
Appointed:
1/23/25-3/07/25 $142,488 «FOIA response includes email to him on first day»
Promotion:
3/07/25-4/XX/25 promoted to Acting Assistant Secretary of Policy, Management and Budget «ended with title change to Principal Deputy Assistant Secretary»
Promotion:
4/XX/25-9/03/25 promoted to Principal Deputy Assistant Secretary «title change allows him to avoid Senate approval/ethics rules. He reported he was leaving the agency on 8/1, but was seemingly still in the role until 9/3»
:
9/03/25-11/XX/25 unknown start type «Working on layoffs / consolidation; LinkedIn reports left in November»
Offboarding:
Left govt 11/XX/25 (self-reported)
Source: Here’s what a Texas oil executive from DOGE is doing inside the Interior Department The Associated Press, 5/27/25
Source: FOIA response from DOI to the Nation Muckrock, 4/15/25
Source: Data Reveals Details About DOGE, Government Hiring in 2025 Bloomberg, 1/09/26
Source: DOGE official appointed head of policy at Interior E&E News, 3/10/25
Source: Here’s what a Texas oil executive from DOGE is doing inside the Interior Department The Associated Press, 5/27/25
Source: Controversial Interior Department Aide From DOGE to Leave Agency The New York Times, 7/25/25
Source: Democratic Lawmakers Demand Interior DOGE Leader’s Financial, Ethics Docs Public Domain, 9/04/25
Source: The Interior Department is taking steps to implement layoffs GovExec, 9/24/25
Source: LinkedIn profile for Tyler Hassen LinkedIn, 
Source: Democratic Lawmakers Demand Interior DOGE Leader’s Financial, Ethics Docs Public Domain, 9/04/25
Appointed:
2/10/25-8/XX/25 volunteer «invited to meeting on 2/12, assuming start on Monday that week; reported on 7/29 as leaving DOI; unclear if leaving DOGE»
Offboarding:
Left govt 8/XX/25 (inferred)
Source: Second Production of FOIA materials from DOI to Sierra Club The Sierra Club, 2/27/26
Source: FOIA response from DOI to the Nation Muckrock, 4/15/25
Source: Here are the people connected to DOGE at Interior E&E News, 3/05/25
Source: Data Reveals Details About DOGE, Government Hiring in 2025 Bloomberg, 1/09/26
Source: DOGE and other day 1 Trump appointees head for the exits at multiple agencies GovExec, 7/29/25
Detailed From:
2/24/25-c.9/29/25 detailed from DOGE Special Advisor / Acting Chief Human Capital Officer «reported on 7/29 as leaving DOI; but still at DOI in Sept; new Chief HCO appointed 9/29»
Source: FOIA response from DOI to the Nation Muckrock, 4/15/25
Source: AFGE, AFL-CIO v. OMB, doc 62-11 Court Document, 10/17/25
Source: Here are the people connected to DOGE at Interior E&E News, 3/05/25
Source: DOGE and other day 1 Trump appointees head for the exits at multiple agencies GovExec, 7/29/25
Source: The Interior Department is taking steps to implement layoffs GovExec, 9/24/25
Appointed:
3/XX/25-3/XX/26 Senior Advisor $142,488
Promotion:
3/XX/26 promoted to Chief Strategy Officer
Source: Data Reveals Details About DOGE, Government Hiring in 2025 Bloomberg, 1/09/26
Source: LinkedIn profile for Matt Luby LinkedIn, 
Source: Interior secretary gives DOGE aide sweeping powers to remake department The Washington Post, 4/21/25
Source: LinkedIn profile for Matt Luby LinkedIn, 
Detailed From:
5/01/25? likely detailed from Ed. «Guessed because created a spreadsheet at DOI on grant cancellations around 5/07»
Source: Trump Administration Is Said to Target Park Service Grants The New York Times, 5/07/25
Appointed:
5/05/25 Chief Information Officer
Source: SpaceX alum tapped as Interior CIO NextGov, 5/05/25

Systems

Federal Personnel Payroll System
3/29/25 2 users with elevated access
A shared service which processes payrolls for Interior, but also DOJ, Treasury, DHS, the Air Force, Nuclear Regulatory Commission and other agencies. Covers about half of federal personnel.
: 3/29/25- Stephanie Holmes, Katrine Trampe (admin)
Source: PEER Report Public Employees for Environmental Responsibility, 4/15/25
DOGE Project: Anti-Personnel
Workforce Reshaping Tool (created by DOGE)
8/XX/25 2 users with elevated access
The AutoRIF software tool was adapted by DOGE engineer Riccardo Biasini into a web service to help automate the process of identifying staff to be laid off and conducting the operation.
: 8/XX/25- Stephanie Holmes, Tyler Hassen (read-write)
Source: The Interior Department is taking steps to implement layoffs GovExec, 9/24/25
DOGE Project: Anti-Personnel

Events

1/23/25
Appointed:
Tyler Hassen starts at DOI.
Appointed: Tyler Hassen 1/23/25-3/07/25
Salary: $142,488
Source: Here’s what a Texas oil executive from DOGE is doing inside the Interior Department The Associated Press, 5/27/25
Source: FOIA response from DOI to the Nation Muckrock, 4/15/25
Source: Data Reveals Details About DOGE, Government Hiring in 2025 Bloomberg, 1/09/26
Note: FOIA response includes email to him on first day
1/28/25
Disruption:
Two DOGE staffers – Tyler Hassen and Bryton Shang – show up an Army Corp of Engineers dam in California and attempt to turn on water pumps to drain more wate one of California’s reservoirs to help fight fires in LA. This dam fed water to central California, far away from the LA wildfires the water was supposed to help.
c.1/30/25
Disruption:
Tyler Hassen conducts a review of every single contract and grant from DOI and sends action items for review directly to Secretary Burgum.
Source: Here’s what a Texas oil executive from DOGE is doing inside the Interior Department The Associated Press, 5/27/25
Agency: DOI
DOGE Project: Spending
2/06/25
Interagency Coordination:
A large contingent of DOGE staff from multiple agencies meet at GSA HQ. It is unclear if they are representing their specific agencies or if this is a DOGE all-hands gathering. It is also unclear how many DOGE staffers in GSA are in attendance.
2/10/25
Appointed:
Katrine Trampe starts at DOI.
Appointed: Katrine Trampe 2/10/25-8/XX/25
Salary: Volunteer
Source: Second Production of FOIA materials from DOI to Sierra Club The Sierra Club, 2/27/26
Source: FOIA response from DOI to the Nation Muckrock, 4/15/25
Source: Here are the people connected to DOGE at Interior E&E News, 3/05/25
Source: Data Reveals Details About DOGE, Government Hiring in 2025 Bloomberg, 1/09/26
Source: DOGE and other day 1 Trump appointees head for the exits at multiple agencies GovExec, 7/29/25
Note: invited to meeting on 2/12, assuming start on Monday that week; reported on 7/29 as leaving DOI; unclear if leaving DOGE
2/16/25
Official Action:
Tyler Hassen sets up the DOGE_DOI account on X.com
Person: Tyler Hassen
Source: December 2024 Production of FOIA materials from DOI to Sierra Club The Sierra Club, 2/27/26
Agency: DOI
2/17/25
Disruption:
Katrine Trampe and Tyler Hassen are invited to a series of meetings related to reviewing contracts at the Department of the Interior.
Person: Katrine Trampe, Tyler Hassen
Source: Second Production of FOIA materials from DOI to Sierra Club The Sierra Club, 2/27/26
Agency: DOI
DOGE Project: Spending
2/19/25
Interagency Coordination:
A staffer at the EOP emails DOGE staff to take part in a webinar about the National Environmental Policy Act.
2/21/25
Interagency Coordination:
Several DOGE staff at HHS and DOI are involved in a large meeting related to a contract with the Office of Refugee Resettlement (ORR) within HHS. Among other systems, this office maintains the Unaccompanied Children Portal, which was of interest to DOGE’s immigration focus.
Disruption:
Katrine Trampe kicks off a series of meetings to discuss “workforce efficiency” for various bureaus at the Department of the Interior.
Person: Katrine Trampe
Source: Second Production of FOIA materials from DOI to Sierra Club The Sierra Club, 2/27/26
Agency: DOI
DOGE Project: Anti-Personnel
2/24/25
Detailed To:
Stephanie Holmes detailed from DOGE to DOI
DOGE Detailed To: DOI Stephanie Holmes 2/24/25-c.9/29/25
Position Title: Special Advisor / Acting Chief Human Capital Officer
Source: FOIA response from DOI to the Nation Muckrock, 4/15/25
Source: AFGE, AFL-CIO v. OMB, doc 62-11 Court Document, 10/17/25
Source: Here are the people connected to DOGE at Interior E&E News, 3/05/25
Source: DOGE and other day 1 Trump appointees head for the exits at multiple agencies GovExec, 7/29/25
Source: The Interior Department is taking steps to implement layoffs GovExec, 9/24/25
Note: reported on 7/29 as leaving DOI; but still at DOI in Sept; new Chief HCO appointed 9/29
System Access:
Stephanie Holmes requests full admin access to the Federal Personnel Payroll System (FPPS) system to process actions for herself as well as DOGE members Katrine Trampe and Tyler Hassen. This is a shared service provided by DOI which handles payroll for approximately half of the federal government.
Person: Katrine Trampe, Stephanie Holmes, Tyler Hassen
Source: PEER Report Public Employees for Environmental Responsibility, 4/15/25
Agency: DOI
DOGE Project: Anti-Personnel
2/25/25
Action:
Citing concerns that there is fraud in the federal payroll, the DOGE team at the Department of the Interior meets with the Interior Business Center Team to discuss their request to receive a log audit of all employee names, positions and hire dates as well as total pay for each pay period.
2/27/25
Interagency Coordination:
DOGE staffers at the Department of the Interior meet with Nicole Hollander from GSA about leases to be cancelled.
Interagency Coordination:
DOGE staff at DOI invite several of their counterparts from OPM to a meeting to discuss DOI Tech Systems.
Question: Fuzz: A michealal@x.com is also invited. Is it meant to be Micaela Lopez Ballefin?
Person: Greg Hogan, Katrine Trampe, Riccardo Biasini, Tyler Hassen
Source: Second Production of FOIA materials from DOI to Sierra Club The Sierra Club, 2/27/26
Agency: DOI, OPM
DOGE Project: Spending
System Access:
Stephanie Holmes’ request for admin access to the FPPS system is approved Senior Advisor to the Secretary of the Interior, Jarrod Agen.
Person: Stephanie Holmes
Source: PEER Report Public Employees for Environmental Responsibility, 4/15/25
Agency: DOI
DOGE Project: Anti-Personnel
2/28/25
Disruption:
Officials at the US Fish and Wildlife Service meet with Katrine Trampe and Tyler Hassen to show them their system for reviewing and processing contracts and to identify ways for both to start approving new contracts for the organization.
Person: Katrine Trampe, Tyler Hassen
Source: Second Production of FOIA materials from DOI to Sierra Club The Sierra Club, 2/27/26
Agency: DOI
DOGE Project: Spending
c.3/03/25
Interagency Coordination:
DOE staff (mostly from DOGE) meet exclusively with DOGE staff from both OPM and GSA to discuss DOI’s data centers, cloud infrastructure and software licenses.
3/04/25
Disruption:
DOGE boasts in a tweet that 27% more water was released by the Bureau of Reclamation in February compared to January (unclear if this adjusts for different lengths of months).
Source: Tweet by DOGE X.com, 3/04/25
Agency: DOI
3/07/25
Promotion:
Tyler Hassen promoted to Acting Assistant Secretary of Policy, Management and Budget at DOI
Promotion: Tyler Hassen 3/07/25-4/XX/25
Position Title: Acting Assistant Secretary of Policy, Management and Budget
Source: DOGE official appointed head of policy at Interior E&E News, 3/10/25
Note: ended with title change to Principal Deputy Assistant Secretary
3/27/25
Disruption:
After being provided with access to FPPS, Stephanie Holmes raises concerns to DOI leadership that she has not yet been granted full admin access to FPPS. The agency CIO is concerned enough about the security implications that he will only allow it if the Secretary of the Interior signs off on a memo outlining the risks. Stephanie Holmes refuses to convey the message to Secretary Burgum.
Person: Stephanie Holmes
Source: PEER Report Public Employees for Environmental Responsibility, 4/15/25
Agency: DOI
DOGE Project: Anti-Personnel
3/28/25
Disruption:
Tyler Hassen places the CIO and CISO at the Department of the Interior on admininstrative leave under investigation for raising alarm about DOGE’s access and delaying Stephanie Holmes from having admin access to the FPPS system, which gives her visibility into payroll for half of the federal government.
Person: Tyler Hassen
Source: 'Chaos and Confusion' at the Crown Jewel of American Science The New York Times, 3/31/25
Agency: DOI
DOGE Project: Impunity, Anti-Personnel
Interagency Coordination:
After the CIO and CISO are sidelined, Gavin Kliger joins a call with Katrine Trampe to pressure a senior advisor in human resources at DOI to direct them to the system owner for FPPS.
Person: Gavin Kliger, Katrine Trampe
Source: PEER Report Public Employees for Environmental Responsibility, 4/15/25
Agency: DOI, IRS
DOGE Project: Anti-Personnel
3/29/25
:
Stephanie Holmes is granted elevated access to FPPS at DOI.
System Access: FPPS: Federal Personnel Payroll System
: admin, 3/29/25 Stephanie Holmes
Note: A shared service which processes payrolls for Interior, but also DOJ, Treasury, DHS, the Air Force, Nuclear Regulatory Commission and other agencies. Covers about half of federal personnel.
DOGE Project: Anti-Personnel
:
Katrine Trampe is granted elevated access to FPPS at DOI.
System Access: FPPS: Federal Personnel Payroll System
: admin, 3/29/25 Katrine Trampe
Note: A shared service which processes payrolls for Interior, but also DOJ, Treasury, DHS, the Air Force, Nuclear Regulatory Commission and other agencies. Covers about half of federal personnel.
DOGE Project: Anti-Personnel
System Access:
Stephanie Holmes and Katrine Trampe are given full admin access to the Federal Personnel Payroll System (FPPS) which handles the payroll processing for approximately half of the federal government.
Source: PEER Report Public Employees for Environmental Responsibility, 4/15/25
Agency: DOI
DOGE Project: Anti-Personnel
3/XX/25
Appointed:
Matt Luby starts as Senior Advisor at DOI.
Appointed: Matt Luby 3/XX/25-3/XX/26
Position Title: Senior Advisor
Salary: $142,488
Source: Data Reveals Details About DOGE, Government Hiring in 2025 Bloomberg, 1/09/26
Source: LinkedIn profile for Matt Luby LinkedIn, 
Source: Interior secretary gives DOGE aide sweeping powers to remake department The Washington Post, 4/21/25
4/01/25
Official Action:
The manager of the DOI’s labor relations branch initiates an investigation of the DOI’s CIO, Deputy CIO, Associate Solicitor and a Special Advisor to HR over their attempts to prevent DOGE from having admin access to FPPS.
Source: PEER Report Public Employees for Environmental Responsibility, 4/15/25
Agency: DOI
DOGE Project: Impunity
4/17/25
Disruption:
The Washington Posts reports that both Tyler Hassen and Matt Luby are scrutinizing all grants at the Department of the Interior. They also requested a list of all grants going to Maine, perhaps to punish the state for its governor’s defiance of Trump.
Person: Matt Luby, Tyler Hassen
Source: Interior secretary gives DOGE aide sweeping powers to remake department The Washington Post, 4/21/25
Agency: DOI
DOGE Project: Spending
Official Action:
The Secretary of the Interior formally designates that Tyler Hassen is in charge of implementing cuts to the agency and reorganizing its offices and areas of responsibility.
Person: Tyler Hassen
Source: Interior secretary gives DOGE aide sweeping powers to remake department The Washington Post, 4/21/25
Agency: DOI
DOGE Project: Elimination, Anti-Personnel
4/XX/25
Promotion:
Tyler Hassen promoted to Principal Deputy Assistant Secretary at DOI
Promotion: Tyler Hassen 4/XX/25-9/03/25
Position Title: Principal Deputy Assistant Secretary
Source: Here’s what a Texas oil executive from DOGE is doing inside the Interior Department The Associated Press, 5/27/25
Source: Controversial Interior Department Aide From DOGE to Leave Agency The New York Times, 7/25/25
Source: Democratic Lawmakers Demand Interior DOGE Leader’s Financial, Ethics Docs Public Domain, 9/04/25
Note: title change allows him to avoid Senate approval/ethics rules. He reported he was leaving the agency on 8/1, but was seemingly still in the role until 9/3
5/01/25?
Detailed To:
Conor Fennessy detailed from Ed. to DOI
Ed.? Detailed To: DOI Conor Fennessy 5/01/25?
Source: Trump Administration Is Said to Target Park Service Grants The New York Times, 5/07/25
Note: Guessed because created a spreadsheet at DOI on grant cancellations around 5/07
5/02/25
Disruption:
Stephanie Holmes, in her role as acting chief human capital officers, sends an email ordering DOI staff to stop by May 28 from doing any detail work they were doing to cover for DOGE staffing cuts at the agency.
5/05/25
Appointed:
Paul McInerny starts as Chief Information Officer at DOI.
Appointed: Paul McInerny 5/05/25
Position Title: Chief Information Officer
Source: SpaceX alum tapped as Interior CIO NextGov, 5/05/25
Official Action:
DOI extends its freeze on issuing any new regulations out to June 4th.
Source: Practices Before the Department of the Interior; Delay of Effective Date Federal Register, 5/05/25
Agency: DOI
DOGE Project: Deregulation
5/07/25
Disruption:
A spreadsheet created by Conor Fennessy outlines a reported $26 million in grant reductions for programs in the National Parks, including those identified as “DEI” or studying climate change. It also axes a popular Scientists in Parks program, that provides educational opportunities for early-career scientists and students. A $400K project to make a park accessible for children with disabilities was also targeted because it was “DEI.”
Person: Conor Fennessy
Source: Trump Administration Is Said to Target Park Service Grants The New York Times, 5/07/25
Agency: DOI
DOGE Project: Anti-DEI, Spending
5/26/25
Disruption:
After Politico published a report that included an email from a 30-year veteran of the Bureau of Land Management which told staff to ignore instructions from Stephanie Holmes that they weren’t allow to sub in for empty roles, he is escorted out of the building by security.
Source: Interior secretary gives DOGE aide sweeping powers to remake department The Washington Post, 4/21/25
Agency: DOI
DOGE Project: Impunity
6/06/25
Identification:
An article in the New York Times reports that both Tyler Hassen and Stephanie Holmes are still active at the DOI.
7/09/25
Oversight:
Ranking Democrats on the House Natural Resources Committee send a letter expressing concern and urging the Secretary of the Department of the Interior to immediately revoke DOGE’s access to the FPPS system that handles payroll for large parts of the US government.
8/18/25
Report:
Despite announcing that he would be leaving the agency on August 1st, Tyler Hassen is still reportedly working at the Department of the Interior. It is unclear what his title is and where his work is focused, but he is still there.
Person: Tyler Hassen
Source: DOGE official is still at Interior after expected exit E&E News, 8/18/25
Agency: DOI
8/XX/25
:
Stephanie Holmes is granted elevated access to WRT at DOI.
System Access: WRT: Workforce Reshaping Tool
: read-write, 8/XX/25 Stephanie Holmes
Note: The AutoRIF software tool was adapted by DOGE engineer Riccardo Biasini into a web service to help automate the process of identifying staff to be laid off and conducting the operation.
DOGE Project: Anti-Personnel
:
Tyler Hassen is granted elevated access to WRT at DOI.
System Access: WRT: Workforce Reshaping Tool
: read-write, 8/XX/25 Tyler Hassen
Note: The AutoRIF software tool was adapted by DOGE engineer Riccardo Biasini into a web service to help automate the process of identifying staff to be laid off and conducting the operation.
DOGE Project: Anti-Personnel
Offboarding:
Katrine Trampe leaves role at DOI (exits govt. service)
Appointed: Katrine Trampe 2/10/25-8/XX/25
Salary: Volunteer
Source: Second Production of FOIA materials from DOI to Sierra Club The Sierra Club, 2/27/26
Source: FOIA response from DOI to the Nation Muckrock, 4/15/25
Source: Here are the people connected to DOGE at Interior E&E News, 3/05/25
Source: Data Reveals Details About DOGE, Government Hiring in 2025 Bloomberg, 1/09/26
Source: DOGE and other day 1 Trump appointees head for the exits at multiple agencies GovExec, 7/29/25
Note: invited to meeting on 2/12, assuming start on Monday that week; reported on 7/29 as leaving DOI; unclear if leaving DOGE
9/02/25
Oversight:
Democrats on the House Committe on Natural Resources send a letter to the Secretary of the Interior requesting information about the activities of Tyler Hassen at the agency including his financial disclosure forms, communications with the ethics office and daily calendar.
9/03/25
Appointed:
Tyler Hassen starts at DOI.
: Tyler Hassen 9/03/25-11/XX/25
Source: The Interior Department is taking steps to implement layoffs GovExec, 9/24/25
Source: LinkedIn profile for Tyler Hassen LinkedIn, 
Source: Democratic Lawmakers Demand Interior DOGE Leader’s Financial, Ethics Docs Public Domain, 9/04/25
Note: Working on layoffs / consolidation; LinkedIn reports left in November
Offboarding:
A day after receiving the letter from House Democrats, the Secretary of the Interior amends his prior order naming Tyler Hassen to the position of Principal Deputy Assistant Secretary to instead be filled by another person at the agency not affiliated with DOGE. It’s unclear if this means that Tyler Hassen is out of the agency or is just in a different role.
9/24/25
Disruption:
The Department of Interior is reportedly planning another round of layoffs for mid-October. This follows the loss of 7500 employees (nearly 11% of its workforce) already. The agency is reported to be using the AutoRIF software developed at OPM to run the process, and it is being run by Stephanie Holmes and Tyler Hassen, who did not leave the agency in August as previously reported.
c.9/29/25
Offboarding:
Stephanie Holmes ends detailed position as Special Advisor / Acting Chief Human Capital Officer at DOI
DOGE Detailed To: DOI Stephanie Holmes 2/24/25-c.9/29/25
Position Title: Special Advisor / Acting Chief Human Capital Officer
Source: FOIA response from DOI to the Nation Muckrock, 4/15/25
Source: AFGE, AFL-CIO v. OMB, doc 62-11 Court Document, 10/17/25
Source: Here are the people connected to DOGE at Interior E&E News, 3/05/25
Source: DOGE and other day 1 Trump appointees head for the exits at multiple agencies GovExec, 7/29/25
Source: The Interior Department is taking steps to implement layoffs GovExec, 9/24/25
Note: reported on 7/29 as leaving DOI; but still at DOI in Sept; new Chief HCO appointed 9/29
11/04/25
Legal:
In a court filing, the Department of Interior reveals that it has frozen its plans to imminently layoff more employees.
Person: Stephanie Holmes
Source: Interior freezes layoff plans E&E News, 11/05/25
Agency: DOI
DOGE Project: Anti-Personnel
11/XX/25
Offboarding:
Tyler Hassen leaves role at DOI (exits govt. service)
: Tyler Hassen 9/03/25-11/XX/25
Source: The Interior Department is taking steps to implement layoffs GovExec, 9/24/25
Source: LinkedIn profile for Tyler Hassen LinkedIn, 
Source: Democratic Lawmakers Demand Interior DOGE Leader’s Financial, Ethics Docs Public Domain, 9/04/25
Note: Working on layoffs / consolidation; LinkedIn reports left in November
3/XX/26
Promotion:
Matt Luby promoted to Chief Strategy Officer at DOI
Promotion: Matt Luby 3/XX/26
Position Title: Chief Strategy Officer
Source: LinkedIn profile for Matt Luby LinkedIn,