Mayer Brown LLP

lobbying firm

Mayer Brown LLP's federal footprint as a lobbying firm — reported lobbying it billed or handled on behalf of the clients it represents (this is the firm's reported revenue for that work, not its own spending). Figures are as reported to the U.S. Senate (LDA).

Lobbying from Senate LDA

Reported lobbying billed / handled $14,480,000

Firm activeFY2022–FY2026

Reported country: 🇺🇸 United States

Lobbying over time

Reported lobbying for Mayer Brown LLP per filing year
FY	Lobbying billed / handled (as firm)
2022	$3,060,000
2023	$3,170,000
2024	$3,120,000
2025	$4,920,000
2026	$210,000

Reported lobbying revenue for the clients Mayer Brown LLP represents — not the firm's own spending.

Clients represented

Medline Industries, L.P. (Formerly Medline Industries, INC.) $1,060,000 · 13 filings
At&T Services INC $980,000 · 16 filings
Globalfoundries U.S. INC. $880,000 · 11 filings
Freedom Holding Corp $860,000 · 6 filings
21st Century Privacy Coalition $850,000 · 16 filings
Onsemi (On Semiconductor Corporation) $810,000 · 8 filings
Ctia - The Wireless Association $800,000 · 16 filings
United States Steel Corporation $730,000 · 16 filings
U.S. Venture, INC. (Formerly U.S. Oil) $690,000 · 15 filings
Suniva, INC. $570,000 · 14 filings

Clients Mayer Brown LLP filed lobbying for, by reported amount billed/handled.

Issues

Issue area	Worked
Taxation/Internal Revenue Code	147
Trade (domestic/foreign)	105
Telecommunications	69
Consumer Issues/Safety/Products	32
Health Issues	27
Manufacturing	25
Government Issues	20
Tariff (miscellaneous tariff bills)	18
Insurance	14
Financial Institutions/Investments/Securities	12
Transportation	9
Chemicals/Chemical Industry	8
Foreign Relations	7
Energy/Nuclear	6
Labor Issues/Antitrust/Workplace	5
Natural Resources	5
Immigration	4
Science/Technology	4
Sports/Athletics	4
Agriculture	3
Banking	3
Environment/Superfund	3
Defense	2
Commodities (big ticket)	1
Medical/Disease Research/Clinical Labs	1

Issue areas across Mayer Brown LLP's filings, by activity count. Linked areas open the CivicGate issue page.

What they lobbied on

Reported activity from Senate LDA

FY2026 Financial Institutions/Investments/Securities

Matters relating to financial services.
FY2026 Foreign Relations

HR 1024, US-Kazakhstan Trade Modernization Act.
FY2026 Transportation

Issues related to the Connected Vehicle Security Act of 2026.
FY2026 Trade (domestic/foreign)

Issues related to transportation, trade, and regulatory policies affecting the vehicle industry.
FY2026 Energy/Nuclear

Monitor and outreach on issues related to energy consumption of AI data centers.
FY2026 Taxation/Internal Revenue Code

Legislative monitoring and outreach related to the CHIPS and Sciences Act (P.L. 117-167); the One Big Beautiful Bill Act (P.L 119-21); and pending regulations related to the Corporate Alternative Minimum Tax (CAMT).
FY2026 Trade (domestic/foreign)

Monitoring and outreach on issues related to certain technologies that present a risk to U.S. national and economic security.
FY2025 Trade (domestic/foreign)

Issues related to USMCA review.

Show 52 more activities

FY2025 Financial Institutions/Investments/Securities

Matters relating to financial services.
FY2025 Natural Resources

Support for the development of critical minerals in Kazakhstan.
FY2025 Foreign Relations

HR 1024, US-Kazakhstan Trade Modernization Act.
FY2025 Trade (domestic/foreign)

Issues related to international trade.
FY2025 Taxation/Internal Revenue Code

Issues related to H.R. 1 (One Big Beautiful Bill Act).

H.R. 1
FY2025 Financial Institutions/Investments/Securities

Matters relating to financial services.
FY2025 Natural Resources

Support for the development of critical minerals in Kazakhstan.
FY2025 Foreign Relations

HR 1024, US-Kazakhstan Trade Modernization Act.
FY2025 Taxation/Internal Revenue Code

Issues related to implementation of the One Big Beautiful Bill Act.
FY2025 Chemicals/Chemical Industry

Implementation of the American Innovation and Manufacturing Act and trade in HFCs.
FY2025 Chemicals/Chemical Industry

Implementation of the American Innovation and Manufacturing Act and trade in HFCs.
FY2025 Trade (domestic/foreign)

Issues related to international trade.
FY2025 Taxation/Internal Revenue Code

Issues related to H.R. 1 (One Big Beautiful Bill Act).

H.R. 1
FY2025 Trade (domestic/foreign)

Issues related to trade and tariff policy.
FY2025 Telecommunications

Privacy and data security legislation; Spectrum-related legislation; Broadband legislation.
FY2025 Taxation/Internal Revenue Code

Issues related to OECD tax negotiations.
FY2025 Trade (domestic/foreign)

Issues related to Section 301 tariffs and US-China trade policy.
FY2025 Telecommunications

H.R. 6489, Safeguarding Adolescents from Exploitative (SAFE) Bots Act H.R. 1623, Shielding Children's Retinas from Egregious Exposure on the Net (SCREEN) Act H.R. 6257, Safe Messaging for Kids Act of 2025 H.R. 6292, Dont Sell Kids Data Act of 2025 H.R. 6291, Children and Teens Online Privacy Protection Act

H.R. 6489 H.R. 1623 H.R. 6257 H.R. 6292 H.R. 6291
FY2025 Telecommunications

Issues related to spectrum auctions. Broadband legislation (no specific bills).
FY2025 Taxation/Internal Revenue Code

Issues related to digital tax proposals.
FY2025 Telecommunications

Privacy and data security legislation; Spectrum-related legislation; Permitting legislation.
FY2025 Trade (domestic/foreign)

Issues related to trade policy.
FY2025 Taxation/Internal Revenue Code

Issues related to implementation of the Inflation Reduction Act.
FY2025 Tariff (miscellaneous tariff bills)

Issues related to the Miscellaneous Tariff Bill.
FY2025 Trade (domestic/foreign)

Issues related to tariffs and trade policy.
FY2025 Consumer Issues/Safety/Products

Monitor issues related to The Fairness to Contact Lens Consumers Act (Pub. L. 108-164); Monitor issues related to telehealth and telemedicine.
FY2025 Health Issues

Monitor issues related to The Fairness to Contact Lens Consumers Act (Pub. L. 108-164); Monitor issues related to telehealth and telemedicine.
FY2025 Trade (domestic/foreign)

Issues related to trade and market access.
FY2025 Trade (domestic/foreign)

Issues related to tariffs and trade policy.
FY2025 Taxation/Internal Revenue Code

Issues related to the implementation of the Inflation Reduction Act.
FY2025 Telecommunications

Privacy and data security legislation; Spectrum-related legislation; Broadband legislation.
FY2025 Taxation/Internal Revenue Code

Advice on implementation of international tax regulations and policies.
FY2025 Telecommunications

Privacy and data security legislation; Spectrum-related legislation; Broadband legislation.
FY2025 Consumer Issues/Safety/Products

Outreach related to The Fairness to Contact Lens Consumers Act (Pub. L. 108-164); Monitor issues related to telehealth and telemedicine.
FY2025 Health Issues

Outreach related to The Fairness to Contact Lens Consumers Act (Pub. L. 108-164); Monitor issues related to telehealth and telemedicine.
FY2025 Trade (domestic/foreign)

General issues related to Investigation 337-1439 Certain Polyvinylidene Fluoride Resins.
FY2025 Taxation/Internal Revenue Code

Issues related to HR 1 (One Big Beautiful Bill Act).
FY2025 Trade (domestic/foreign)

Issues related to tariff negotiations.
FY2025 Taxation/Internal Revenue Code

Issues related to H.R. 1 (One Big Beautiful Bill Act).

H.R. 1
FY2025 Health Issues

Issues relating to wearables and health technology.
FY2025 Trade (domestic/foreign)

Issues related to wearables and health technology.
FY2025 Taxation/Internal Revenue Code

Issues related to wearables and health technology.
FY2025 Telecommunications

Privacy and data security legislation.
FY2025 Taxation/Internal Revenue Code

Implementation of the Inflation Reduction Act.
FY2025 Trade (domestic/foreign)

Issues related to tariffs and trade.
FY2025 Taxation/Internal Revenue Code

Legislative monitoring and outreach related to the CHIPS and Sciences Act (P.L. 117-167).
FY2025 Trade (domestic/foreign)

Monitoring and outreach on issues related to certain technologies that present a risk to U.S. national security.
FY2025 Manufacturing

Legislative monitoring and outreach related to the CHIPS and Sciences Act (P.L. 117-167).
FY2025 Manufacturing

Legislative monitoring and outreach on issues related to the semiconductor industry.
FY2025 Trade (domestic/foreign)

Monitoring and outreach on issues related to certain technologies that present a risk to U.S. national and economic security.
FY2025 Energy/Nuclear

Monitor and outreach related to grid and energy security and efficiency.
FY2025 Insurance

Issues related to Department of Labor claims processing reforms.

The specific issues and bills Mayer Brown LLP reported lobbying on, newest first. Bill references that CivicGate tracks link to the bill; others are shown as reported.