Europe needs cross-border cooperation. Its institutional weakness is different: powers and rules can accumulate at the centre more easily than they can return to national, regional or local experimentation.
The result is a centralising ratchet. A measure justified to remove one market barrier can become a common rule, then a supervisory architecture, then a reporting system and finally the baseline for the next intervention. Integration becomes uniformity when the means cease to be tested against mutual recognition, minimum standards and genuine subsidiarity.
Key takeaways
- The EU Treaties formally limit Union action through conferral, subsidiarity and proportionality; the problem is how those principles operate in cumulative practice.
- Market access does not always require one substantive rule: mutual recognition can preserve movement while allowing jurisdictional difference.
- A robust European order should make central action prove its necessity and make review, variation and reversal institutionally real.
The thesis is institutional, not historical
This is not an argument that European integration repeats the violence or ideology of any earlier revolution. It is a contemporary diagnosis of decision architecture.
The question is simple: when a cross-border problem is identified, which level must prove its case? If difference itself is treated as a defect, the answer will usually be harmonisation. If decentralised knowledge and regulatory competition are treated as public goods, the answer may instead be mutual recognition, coordination, minimum standards or no central rule.
The distinction matters because the single market and a centralised regulatory state are not synonyms.
What the Treaties say
Article 5 of the Treaty on European Union states three relevant principles. Conferral limits the Union to competences granted by the Member States. Subsidiarity requires Union action in non-exclusive areas only where objectives cannot be sufficiently achieved by Member States and can be better achieved at Union level. Proportionality requires the content and form of Union action not to exceed what is necessary.
Article 114 of the Treaty on the Functioning of the European Union provides a legal basis for approximating national laws where measures have as their object the establishment and functioning of the internal market.
Both propositions can be true: some barriers require common action, and the existence of a barrier does not prove that maximum uniformity is necessary.
The mechanism of the ratchet
Centralisation rarely arrives as one constitutional event. It accumulates through a sequence.
First, national differences are identified as costs or risks. Second, the problem is framed at European scale. Third, a common definition or minimum rule is adopted. Fourth, comparable data and reporting become necessary to supervise the rule. Fifth, differences in implementation are treated as new fragmentation. The next measure then begins from a more centralised baseline.
Each step can be defensible in isolation. The ratchet appears in the direction of travel and in the absence of equally effective mechanisms for repeal, opt-out, experimental variation or return of competence.
Evidence: Europe already has a pluralist tool
The Commission’s own description of mutual recognition shows that free movement need not always depend on full harmonisation. For goods not, or only partly, subject to EU harmonisation, a product lawfully marketed in one Member State can in principle be sold in another, subject to justified protections.
Mutual recognition is not laissez-faire. It contains procedures, evidence requirements, exceptions and remedies. Its institutional virtue is that it starts from movement plus difference. Harmonisation starts from a common rule plus central amendment.
This is why the choice of instrument is constitutional in effect even when it appears technical.
The best objection
Some problems are genuinely transnational. Financial contagion, cross-border pollution, product safety, sanctions, money laundering and digital networks can defeat purely national solutions. Fragmented rules can also impose substantial costs on smaller firms trying to operate across 27 markets.
That objection is strong. It establishes the case for European capacity, not for an unlimited presumption in favour of uniformity. The same cross-border objective may be achievable through interoperable national systems, minimum outcomes, mutual recognition or targeted central rules. Subsidiarity is meaningful only if those alternatives are compared rather than mentioned ceremonially.
Interpretation: competition between rules is information
Jurisdictional competition is often described only as a race to the bottom. It can produce that outcome where costs are exported and accountability is weak. But competition can also reveal which rules attract investment, protect citizens, reduce compliance burdens or adapt to new technology.
Uniformity removes some transaction costs while reducing the number of institutional experiments. That trade-off should be explicit. A rule that is wrong in one jurisdiction can be corrected locally; a wrong uniform rule has a larger blast radius and a more complex coalition for change.
Practical consequences for internationally mobile people and firms
Centralisation is not an abstract constitutional debate. It determines whether a business faces one passportable authorisation or one extensive rulebook; whether tax reporting is coordinated or substantively harmonised; whether a small state can differentiate; and whether a person can choose between meaningfully different legal environments inside Europe.
Mobility disciplines jurisdictions only when alternatives remain real. If every material rule converges, free movement changes from a choice between systems into movement within one system.
That does not make all regulatory differences good. It means the burden of proof should not run only against difference.
A more robust decision rule
Before adopting a central measure, the institutions should identify the cross-border harm, show why Member State action is insufficient, compare mutual recognition and minimum standards, quantify the compliance burden and state how the measure can be reviewed or withdrawn.
Where harmonisation is necessary, the design should preserve room for stricter or alternative local solutions where compatible with the objective. Sunset and review clauses should test whether the original problem still exists. Reporting should be limited to the evidence needed for the rule rather than becoming an independent engine of expansion.
The goal is not a weak Europe. It is a Europe strong enough to act collectively where scale is indispensable and restrained enough to leave discovery, accountability and exit at lower levels where it is not.
Sources
- EUR-Lex — Article 5, Treaty on European Union
- EUR-Lex — Article 114, Treaty on the Functioning of the European Union
- European Commission — Mutual recognition of goods
- European Commission — Better regulation
- European Commission — Impact assessments
- Elinor Ostrom — “Polycentric Systems for Coping with Collective Action and Global Environmental Change”
Disclaimer
This article is institutional and editorial analysis. It does not constitute legal, tax, regulatory or investment advice, and it does not claim that every EU measure is centralising or that national action is always preferable.
