Idaho Attorney General Raúl Labrador is among 15 state attorneys general who have sent a formal challenge to the world’s largest accounting firms, arguing that sweeping climate pledges made by those firms undermine the professional independence their clients are entitled to expect.

The Firms and the Commitments at Issue

The coalition directed its letter at Deloitte, Ernst & Young, KPMG, and PricewaterhouseCoopers — the Big Four that dominate corporate auditing globally. The group identified two specific commitments as potentially problematic: the firms’ backing of the Task Force on Climate-related Financial Disclosures framework, and their status as founding members of the Net Zero Financial Service Providers Alliance.

That alliance binds its members to reshaping their products and services around the Paris climate agreement’s net-zero emissions target, a goal set for 2050 or earlier. The attorneys general contend that locking in such policy commitments creates a structural tension with the neutrality that professional auditors are legally and ethically required to maintain.

Legal Arguments Raised

The letter advances multiple theories of potential wrongdoing. The coalition contends the Big Four may be running afoul of state consumer protection statutes by misrepresenting their independence to clients during the audit process. The group also raises the possibility that the firms have breached state contractual requirements mandating compliance with applicable state law.

Labrador framed the harm in practical terms, focusing on the financial squeeze placed on smaller businesses. “Idaho small businesses depend on their accountants to fight for their best interests,” Labrador told the Gem State Chronicle. “When the Big Four force their clients to pay higher fees for burdensome climate change reporting, it’s a shakedown.”

Coalition Members

Labrador, who serves as Idaho’s 33rd attorney general, was joined in the effort by his counterparts in Alabama, Alaska, Arkansas, Florida, Iowa, Mississippi, Montana, North Dakota, Ohio, Oklahoma, South Carolina, South Dakota, Texas, and West Virginia. The group spans a wide geographic range but is unified by Republican leadership and shared skepticism of ESG-driven mandates in commercial services.

Wider Policy Backdrop

This letter is part of a broader, ongoing effort by Republican-led states to scrutinize how large financial and professional services firms have woven environmental and climate goals into their core operations. Critics in that camp argue that firms wielding significant market power have effectively advanced climate policy outside the legislative process — at their clients’ expense.

The Big Four occupy a particularly sensitive role in that debate. Unlike ordinary commercial actors, they serve a quasi-regulatory function: businesses and governments across the country rely on their audits to produce objective financial assessments. A pre-committed stance on climate policy, the coalition argues, compromises that objectivity.

What Comes Next

The letter represents an opening demand for answers rather than formal legal action. Labrador’s office has not announced any response deadline or outlined specific enforcement steps that could follow if the firms’ answers are judged to be inadequate. Whether the inquiry escalates into litigation or regulatory referrals will depend in part on how Deloitte, Ernst & Young, KPMG, and PricewaterhouseCoopers choose to respond.