On August 14, 2026, the U.S. Mission to the European Union released a document that reads more like an incident report than diplomatic correspondence. The U.S. Government expressed concerns about two EU sustainability directives, the Corporate Sustainability Due Diligence Directive (CS3D) and the Corporate Sustainability Reporting Directive (CSRD), describing them as burdensome for U.S. companies operating in Europe.
This isn't a data breach or factory accident, but it's an important incident to examine. It highlights a breakdown in how cross-border regulatory frameworks should work when two major economies try to align their compliance expectations.
What Happened
The EU enacted two major sustainability directives affecting companies doing business in the EU, including U.S. firms. The CS3D requires companies to conduct due diligence on human rights and environmental impacts across their value chains. The CSRD mandates sustainability reporting using "double materiality," meaning companies must report both how sustainability issues affect their finances and how their operations affect people and the planet.
U.S. companies caught in scope face a problem: these requirements don't align with U.S. standards, which focus on single financial materiality. The obligations extend globally, not just to EU operations. Penalties are calculated on worldwide revenue, and there's no safe harbor for companies already complying with U.S. regulations.
In August 2025, the U.S. and EU signed the Turnberry Agreement, in which the EU committed to reducing administrative burdens from these directives. A year later, with the European Commission preparing implementation guidelines for CS3D, the U.S. Government submitted formal comments asking for specific changes.
Timeline
August 21, 2025: U.S. and EU sign the Turnberry Agreement. The EU commits to ensuring CS3D and CSRD don't create "undue restrictions on bilateral trade."
2025-2026: The EU passes the Omnibus Directive, simplifying some requirements. Notably, it removes the mandatory net-zero climate transition plan obligation from Article 22.
August 2026: European Commission launches consultation for CS3D implementation guidelines.
August 14, 2026: U.S. Government publishes formal comments raising concerns about extraterritorial reach and requesting specific changes. Ambassador Andrew Puzder shares the document on social media.
Present: EU Member States are implementing the Omnibus changes. The Commission is drafting CS3D guidelines that will shape enforcement, though they can't change the directive's legal substance.
Which Controls Failed or Were Missing
The breakdown here isn't technical. It's structural. Several coordination mechanisms that should prevent regulatory conflict simply didn't work:
No mutual recognition framework: Despite "high-quality corporate governance regulations" in the U.S., the EU directives offer no presumption of compliance for companies already meeting U.S. standards. There's no mechanism to say, "If you're compliant in your home jurisdiction, you meet a baseline threshold here."
No scope limitation by geography: In-scope U.S. companies face global due diligence obligations and enforcement, not just requirements tied to their EU operations or EU-produced goods. The U.S. is asking that CS3D and CSRD requirements be "limited for U.S. businesses (i.e., only to EU subsidiaries of U.S. companies and goods produced in the EU)."
No proportionality in penalties: Fines are calculated on worldwide turnover, following the EU's approach in competition policy. But for a U.S. company with limited EU operations, this means a penalty based on global revenue for violations that may only affect a small portion of the business.
No upstream relief: Companies that don't directly supply an in-scope EU buyer can still face audit and information requests under CS3D's upstream obligations. The U.S. wants these companies excluded.
Divergent materiality standards: The EU's double materiality and impact-based approach conflicts with the U.S. single financial materiality standard. Companies must maintain two parallel reporting systems with different thresholds and scopes.
Weak stakeholder definition: The U.S. argues the current definition of "stakeholders", those whose interests "are or could be" directly affected, is too broad. It's asking for a narrower definition covering only those "who could reasonably be affected."
No prior enforcement requirement for civil claims: Under the current framework, civil claims are possible without prior regulatory action. The U.S. wants private rights of action limited to cases where regulators have already acted.
What the Standards Require
There's no single standard governing cross-border regulatory cooperation, but several frameworks set expectations:
OECD Guidelines for Multinational Enterprises call for governments to avoid conflicting requirements and to cooperate when their policies affect multinational enterprises.
WTO Technical Barriers to Trade Agreement requires that technical regulations not create unnecessary obstacles to international trade and that countries consider using relevant international standards.
ISO 37301 Compliance Management Systems (section 4.2) requires organizations to understand "the needs and expectations of interested parties" and "legal requirements and other requirements", but it doesn't resolve what happens when those requirements conflict across jurisdictions.
The Turnberry Agreement itself created an expectation: the EU committed to ensuring these directives wouldn't pose "undue restrictions on bilateral trade." That commitment is now being tested.
Lessons and Action Items for Your Team
If your company operates in both the U.S. and EU, here's what this regulatory friction means for your compliance program:
Map your exposure now: Determine whether you're in scope for CS3D or CSRD based on the thresholds as they currently stand post-Omnibus. Don't wait for the guidelines, they won't change the legal obligations, only clarify enforcement approaches.
Build for dual materiality: Even if the U.S. succeeds in narrowing some requirements, you'll likely need systems that can handle both single financial materiality (for U.S. reporting) and double materiality (for EU reporting). Start identifying where these frameworks diverge in your risk assessment process.
Document your U.S. compliance: If the EU creates a presumed compliance disposition for high-quality regulatory jurisdictions, you'll need evidence that you're meeting U.S. standards. Strengthen your documentation of existing due diligence, governance, and reporting practices.
Review your value chain visibility: CS3D's upstream obligations mean you may need information from suppliers who don't directly serve your EU operations. Assess whether your current supply chain compliance program can support requests from EU buyers in your value chain.
Scenario-plan for penalty calculations: Understand how worldwide turnover-based penalties would affect your company. This may influence decisions about corporate structure, where you book revenue, and how you allocate compliance resources.
Watch the guidelines process: The European Commission's CS3D implementation guidelines will shape how authorities enforce the directive. Track the consultation and final guidance, they'll tell you where you have flexibility and where you don't.
Revisit your stakeholder mapping: If the EU narrows the stakeholder definition to "reasonably affected" parties, your materiality assessment may change. Don't lock in your current approach until the guidelines are final.
The U.S. Government's August 2026 comments make clear that regulatory alignment isn't automatic, even between close trading partners. Your compliance program needs to work in the world as it is, not as trade agreements promise it will be.
