LANDON STROPKO
LANDON STROPKO is named as a lobbyist in 24 lobbying reports we hold, filed by 1 registrant for 24 clients.
Earlier government jobs, as reported
A lobbying report lists each lobbyist's covered positions: jobs in Congress or the executive branch that the law asks a lobbyist to disclose. Each line is copied as a report states it.
- Leg. Dir., Sen. Mike Enzi (2017-2018); Rep. Cynthia Lummis (2009-2016): Chief of Staff (DC), Leg. Dir., Sr. Leg. Asst, Leg. Asst; Rep. Barbara Cubin (2003-2008): Sr. Leg. Asst, Leg. Asst, Leg. Aide, Leg. Correspondent, Intern
Registrants and clients
- INVARIANT LLC · 24 reports
Clients: AMERICAN BEVERAGE ASSOCIATION; ARAMARK SERVICES, INC.; AVANTUS LLC; CARBON REMOVAL CO., INC. DBA VAULTED DEEP; CARRIER CORPORATION; CERES, INC.; COOK INLET REGION INCORPORATED (CIRI); CORN REFINERS ASSOCIATION; ECOLAB; GENERAL MATTER INC; GEOTHERMAL EXCHANGE ORGANIZATION; HUDSON TECHNOLOGIES; KARPOWERSHIP UK LIMITED; POET LLC; SAN JOAQUIN RIVER EXCHANGE CONTRACTORS WATER AUTHORITY; SEDRON TECHNOLOGIES, LLC; SK AMERICAS, INC.; STRATA ENERGY, INC.; TOYOTA MOTOR NORTH AMERICA, INC.; URANIUM PRODUCERS OF AMERICA; VULCAN ELEMENTS INC.; WASHINGTON GAS; WATER COALITION AGAINST PFAS; WYOMING RARE (USA) INC. ON BEHALF OF ARE MANAGEMENT LLC.
Bills named where this lobbyist is listed, and how the House and the Senate voted
17 bills named in these reports. None of them became law in our record, so no recorded vote is shown. A lobbying report names the houses of Congress and the agencies the lobbyists contacted. It does not say which members or staff they met.
| Bill | Status | How the House and the Senate voted |
|---|---|---|
| H.R. 1267Water Systems PFAS Liability Protection Act | Introduced | No recorded vote in our record |
| H.R. 1566REPAIR Act | Introduced | No recorded vote in our record |
| H.R. 2145Recycling Infrastructure and Accessibility Act of 2025 | Introduced | No recorded vote in our record |
| H.R. 4109Recycling and Composting Accountability Act | Introduced | No recorded vote in our record |
| H.R. 4466CIRCLE Act | Introduced | No recorded vote in our record |
| H.R. 4776SPEED Act | Passed the House | No recorded vote in our record |
| H.R. 5221PART Act | Introduced | No recorded vote in our record |
| H.R. 6687DRIVER Act | Introduced | No recorded vote in our record |
| H.R. 7567Farm, Food, and National Security Act of 2026 | Passed the House | No recorded vote in our record |
| H.R. 8646Agriculture, Rural Development, Food and Drug Administration, and Related Agency Appropriations Act, 2027 | Passed the House | No recorded vote in our record |
| H.R. 8800National Defense Authorization Act for Fiscal Year 2027 | Passed the House | No recorded vote in our record |
| H.R. 9022Energy and Water Development and Related Agencies Appropriations Act, 2027 | Introduced | No recorded vote in our record |
| H.R. 9170Transportation, Housing and Urban Development, and Related Agencies Appropriations Act, 2027 | Introduced | No recorded vote in our record |
| S. 351STEWARD Act of 2025 | Passed the Senate | No recorded vote in our record |
| S. 3122Better FDA Act of 2025 | Introduced | No recorded vote in our record |
| S. 3778Carbon Resource Innovation Act | Introduced | No recorded vote in our record |
| S. 4784National Defense Authorization Act for Fiscal Year 2027 | Reported by committee | No recorded vote in our record |
Issues named: Energy/Nuclear (12), Environment/Superfund (9), Taxation/Internal Revenue Code (8), Defense (4), Trade (domestic/foreign) (4), Agriculture (2), Automotive Industry (1), Communications/Broadcasting/Radio/TV (1), Consumer Issues/Safety/Products (1), Food Industry (safety, labeling, etc.) (1), Government Issues (1), Natural Resources (1), and 4 mores.
Every report
| Client | Registrant | Kind, as filed | Posted | Report |
|---|---|---|---|---|
| SEDRON TECHNOLOGIES, LLCAgriculture, Taxation/Internal Revenue Code | INVARIANT LLC | 2nd Quarter - Report | The report on LDA.gov | |
| KARPOWERSHIP UK LIMITEDEnergy/Nuclear | INVARIANT LLC | 2nd Quarter - Report | The report on LDA.gov | |
| CARBON REMOVAL CO., INC. DBA VAULTED DEEPEnvironment/Superfund | INVARIANT LLC | 2nd Quarter - Report | The report on LDA.gov | |
| GENERAL MATTER INCEnergy/Nuclear, Defense | INVARIANT LLC | 2nd Quarter - Report | The report on LDA.gov | |
| TOYOTA MOTOR NORTH AMERICA, INC.Automotive Industry, Taxation/Internal Revenue Code, Trade (domestic/foreign), Transportation, Consumer Issues/Safety/Products, Communications/Broadcasting/Radio/TV | INVARIANT LLC | 2nd Quarter - Report | The report on LDA.gov | |
| AMERICAN BEVERAGE ASSOCIATIONEnvironment/Superfund, Taxation/Internal Revenue Code, Food Industry (safety, labeling, etc.) | INVARIANT LLC | 2nd Quarter - Report | The report on LDA.gov | |
| ECOLABEnvironment/Superfund, Trade (domestic/foreign), Taxation/Internal Revenue Code | INVARIANT LLC | 2nd Quarter - Report | The report on LDA.gov | |
| WATER COALITION AGAINST PFASEnvironment/Superfund | INVARIANT LLC | 2nd Quarter - Report | The report on LDA.gov | |
| VULCAN ELEMENTS INC.Defense | INVARIANT LLC | 2nd Quarter - Report | The report on LDA.gov | |
| AVANTUS LLCEnergy/Nuclear, Taxation/Internal Revenue Code | INVARIANT LLC | 2nd Quarter - Report | The report on LDA.gov | |
| CERES, INC.Environment/Superfund | INVARIANT LLC | 2nd Quarter - Report | The report on LDA.gov | |
| CORN REFINERS ASSOCIATIONEnvironment/Superfund | INVARIANT LLC | 2nd Quarter - Report | The report on LDA.gov | |
| WASHINGTON GASEnergy/Nuclear | INVARIANT LLC | 2nd Quarter - Report | The report on LDA.gov | |
| SK AMERICAS, INC.Trade (domestic/foreign), Energy/Nuclear, Environment/Superfund, Science/Technology, Pharmacy, Taxation/Internal Revenue Code | INVARIANT LLC | 2nd Quarter - Report | The report on LDA.gov | |
| CARRIER CORPORATIONEnergy/Nuclear, Environment/Superfund, Trade (domestic/foreign) | INVARIANT LLC | 2nd Quarter - Report | The report on LDA.gov | |
| POET LLCAgriculture, Energy/Nuclear, Taxation/Internal Revenue Code | INVARIANT LLC | 2nd Quarter - Report | The report on LDA.gov | |
| ARAMARK SERVICES, INC.Government Issues | INVARIANT LLC | 2nd Quarter - Report | The report on LDA.gov | |
| WYOMING RARE (USA) INC. ON BEHALF OF ARE MANAGEMENT LLCEnergy/Nuclear, Defense | INVARIANT LLC | 2nd Quarter - Report | The report on LDA.gov | |
| STRATA ENERGY, INC.Energy/Nuclear | INVARIANT LLC | 2nd Quarter - Report | The report on LDA.gov | |
| COOK INLET REGION INCORPORATED (CIRI)Energy/Nuclear, Small Business | INVARIANT LLC | 2nd Quarter - Report | The report on LDA.gov | |
| SAN JOAQUIN RIVER EXCHANGE CONTRACTORS WATER AUTHORITYNatural Resources | INVARIANT LLC | 2nd Quarter - Report | The report on LDA.gov | |
| GEOTHERMAL EXCHANGE ORGANIZATIONEnergy/Nuclear, Taxation/Internal Revenue Code | INVARIANT LLC | 2nd Quarter - Report | The report on LDA.gov | |
| URANIUM PRODUCERS OF AMERICADefense, Energy/Nuclear | INVARIANT LLC | 2nd Quarter - Report | The report on LDA.gov | |
| HUDSON TECHNOLOGIESEnvironment/Superfund | INVARIANT LLC | 2nd Quarter - Report | The report on LDA.gov |
Campaign gifts this lobbyist reported
Lobbyists and registrants report their political contributions twice a year (form LD-203). We hold these reports only for contributions to the campaign committees of members who sponsored or cosponsored a bill named in a lobbying report. Any other contribution: Not checked yet.
No contribution report we hold lists a gift from this filer.
Where this comes from
Lobbying Disclosure Act reports (LD-2), LDA.gov. We save our own copy of each page of LDA.gov's list of reports before we read it. These pages were built from our copies on .
2026-Q2: every page of LDA.gov's list saved and read.
A lobbying report states the registrant's income from the client (a lobbying firm) or its own lobbying expenses (an organization lobbying for itself), for the whole quarter and every issue together. A report of less than $5,000, or of no lobbying activity, states no figure. It is not the amount spent on one bill.
Senate Office of Public Records cannot vouch for the data or analyses derived from these data after the data have been retrieved from LDA.gov.