A New Battle for the Meaning of Financial Risk

A coalition of 23 Republican state attorneys general has written to the major credit rating agencies — Moody's, S&P Global Ratings, and Fitch Ratings — as well as the U.S. Securities and Exchange Commission, demanding fuller disclosure on how sustainability factors are incorporated into credit ratings. While on the surface this may appear to be another chapter in America’s increasingly polarised ESG debate, it is in fact a far more consequential development. It goes to the heart of how risk is measured, how markets price capital, and who gets to define materiality in modern finance.

Credit rating agencies occupy a uniquely powerful position in global markets. Their assessments influence borrowing costs for sovereigns, municipalities, banks, corporates, and structured finance issuers. Pension funds, insurers, banks, and asset managers often rely on ratings as a core input in portfolio construction, regulatory capital frameworks, and investment mandates. When ratings methodologies evolve, the effects ripple across the entire investment chain.

The attorneys general appear to be asking a simple question: if environmental, social, or governance factors are being considered in credit assessments, investors deserve to know how, when, and to what extent. That principle — transparency in methodology — is difficult to oppose. Markets function best when participants understand the assumptions embedded in key benchmarks and gatekeeping systems.

Yet the politics surrounding the request are impossible to ignore. Over recent years, parts of the U.S. political right have mounted an aggressive campaign against ESG investing, arguing that sustainability considerations can be used to advance ideological goals at the expense of returns, energy security, or democratic accountability. Asset managers have been investigated, state pension mandates rewritten, and public contracts threatened. In that context, the letter to the rating agencies will inevitably be viewed by some as another attempt to pressure financial institutions away from integrating climate or broader sustainability risks.

That interpretation, however, risks oversimplifying the issue.

There is a legitimate and increasingly important debate about how sustainability factors should enter credit analysis. Climate transition risk, physical climate damage, labour controversies, governance failures, litigation exposure, cyber resilience, water scarcity, biodiversity loss, and supply-chain fragility can all affect an issuer’s future cashflows, cost base, refinancing ability, and balance-sheet strength. If such factors are financially material, rating agencies arguably have a duty to consider them.

The key word is material.

Credit ratings are not moral scores. They are forward-looking opinions on the probability of default and expected loss. Any sustainability factor included in a rating should therefore meet the same threshold as interest-rate exposure, leverage trends, liquidity pressures, or management quality: namely, it must plausibly affect creditworthiness. Investors do not need agencies to promote values. They need them to identify risks.

This is where the attorneys general may inadvertently be pushing the market toward a healthier outcome. If rating agencies are required to explain more clearly how sustainability inputs affect ratings decisions, they may sharpen the distinction between financially relevant analysis and reputational signalling. That would benefit both sceptics and supporters of ESG integration.

For institutional investors, greater transparency would be welcome. Many allocators already conduct their own credit work rather than relying blindly on agency ratings. But ratings still matter deeply in mandates, collateral frameworks, and regulatory systems. Knowing whether a downgrade was driven by leverage metrics, governance failures, wildfire exposure, stranded asset risk, or political instability is valuable information. Better disclosure enables better challenge.

The SEC also faces an interesting balancing act. On one hand, regulators generally favour transparency, consistency, and investor protection. On the other, they must avoid appearing to politicise credit methodology or dictate what analysts can and cannot consider. Credit ratings work best when independent judgement is preserved. Regulators can ask for disclosure standards without prescribing outcomes.

There is also a broader market reality that transcends U.S. politics. Outside America, many investors, regulators, and central banks increasingly view climate and governance risks as mainstream financial considerations. European banks face climate stress tests. Global insurers model catastrophe exposure. Sovereign investors assess transition vulnerability. Whether or not the term “ESG” remains politically fashionable in some U.S. states, the underlying risks have not disappeared.

Indeed, the branding may be changing faster than the substance. Many firms now talk less about ESG and more about resilience, stewardship, risk management, long-term value, or financially material sustainability factors. That shift reflects a maturation of the market. Labels matter less than disciplined analysis.

For Moody’s, S&P, and Fitch, the practical response is likely straightforward: explain methodologies more clearly, document causal links rigorously, and ensure consistency across sectors and jurisdictions. If climate flood risk affects a municipal bond rating, show why. If governance failures weaken a corporate outlook, evidence it. If a factor is immaterial, say so.

For investors, this episode is a reminder that the real debate is not whether sustainability should matter, but when it matters financially, over what time horizon, and with what evidential threshold. Those are serious analytical questions, not partisan slogans.

The coalition’s letter may have been born of ideological conflict, but it could still produce a constructive result. If it forces clearer thinking and greater methodological transparency in credit markets, then the ultimate winners may be neither political camp, but investors themselves.