Can the EU Suspend a New Member’s Voting Rights Under Its 15-Year Safeguard?
Introduction
The European Commission has proposed a new safeguard that could affect EU new member voting rights during the first 15 years after accession. In particularly serious cases, the mechanism could permit the suspension of a newly admitted Member State’s voting rights in the Council. It would not create an automatic 15-year suspension: the 15-year period concerns how long the special safeguard would remain available after accession (European Commission, 2026).
The proposal appears in the Commission’s October 2026 Communication Preparing for a Wider Union. It envisages an institutional safeguard addressing serious breaches of the values protected by Article 2 of the Treaty on European Union (TEU) and serious breaches of the principle of sincere cooperation under Article 4(3) TEU. The Commission proposes that measures should reflect the nature, gravity, and effects of the breach, remain proportionate, undergo judicial scrutiny, and be reviewed regularly (European Commission, 2026).
The mechanism concerns the institutional voting rights of a Member State government in the Council. It does not concern the right of individuals to vote in European Parliament elections or other rights attached to EU citizenship. Its legal significance lies instead in the possibility that a state could become a full member of the Union while remaining temporarily subject to an additional enforcement regime unavailable against older Member States.
Article 49 TEU provides a plausible legal route for creating such a regime through future accession arrangements. The difficulty is Article 4(2) TEU, which requires the Union to respect the equality of Member States before the Treaties. EU accession law permits transitional differentiation, but the Court of Justice has never decided whether a 15-year accession-specific mechanism capable of suspending Council voting rights falls within the permissible limits of that differentiation.
1. EU New Member Voting Rights Under the 15-Year Safeguard
The Commission’s proposed institutional safeguard would operate through future accession arrangements rather than as an immediately applicable sanctioning power. Its purpose is to provide a post-accession response where serious problems concern fundamental Union values or compliance with the obligations of membership. Council voting rights would be among the measures available only in particularly serious cases (European Commission, 2026).
The substantive triggers are significant. Article 2 TEU identifies the Union’s foundational values, including human dignity, freedom, democracy, equality, the rule of law, and respect for human rights. Article 4(3) TEU imposes the principle of sincere cooperation, requiring the Union and the Member States to assist one another, fulfil Treaty obligations, facilitate Union tasks, and refrain from measures capable of jeopardizing Union objectives (TEU, Articles 2 and 4).
The proposed mechanism is consequently broader than a narrow rule-of-law sanction. A serious failure connected with sincere cooperation could also fall within its scope, depending on the eventual wording of the relevant accession provisions. That possibility does not mean that ordinary political disagreement or the use of a Treaty voting right would automatically constitute a breach. The legal threshold would have to be determined from the final accession text and its application.
The 15-year period must also be understood correctly. The Commission states that the institutional safeguard clause would apply for 15 years after accession. It separately envisages regular review and the amendment or lifting of measures when the circumstances justifying them have been remedied. The Communication does not establish that an individual suspension would last 15 years, nor does it fully resolve what would happen to a measure imposed shortly before the safeguard period expired (European Commission, 2026).
2. Article 49 and the Legal Basis for the Safeguard
Article 49 TEU governs admission to the European Union. A European state applying for membership must respect the values in Article 2 and commit itself to promoting them. The Council acts unanimously on the application after consulting the Commission and obtaining the consent of the European Parliament (TEU, Article 49).
Article 49 also provides that the conditions of admission and the adjustments to the Treaties entailed by accession are to be contained in an agreement between the existing Member States and the applicant state. That agreement is subject to ratification by all contracting states according to their respective constitutional requirements. These provisions make accession law capable of addressing more than the date on which membership formally begins.
The proposed safeguard relies on that accession architecture. The Commission is not asserting a free-standing power to remove an existing Member State’s vote outside the Treaties. It proposes instead that the additional mechanism be established through future accession arrangements. The applicant would participate in the agreement creating those conditions, but that consent would not by itself determine whether every resulting distinction remained compatible with the constitutional principles governing the Union after accession.
2.1 Accession Treaties as EU Primary Law
The legal status of accession provisions strengthens the Commission’s approach. In Austria v Council, Case C-445/00, the Court of Justice held that protocols and annexes to an act of accession constitute provisions of primary law and, unless the accession act provides otherwise, cannot be suspended, amended, or repealed through ordinary secondary-law procedures (CJEU, 2003).
That judgment does not establish that every provision connected with an accession agreement necessarily has primary-law status. It does demonstrate that accession instruments can contain primary-law provisions capable of modifying the legal position that would otherwise follow from the existing Treaties. The precise status of the proposed safeguard would depend on the legal form in which it was eventually incorporated into the accession settlement.
This distinction is important. A safeguard embedded in primary accession law would stand on a stronger legal basis than a later regulation attempting to impose special membership restrictions on a particular group of Member States. Primary-law status, however, would not eliminate questions of interpretation, institutional competence, proportionality, effective judicial protection, or the relationship between the new provision and Article 4(2) TEU.
3. Equality of Member States After Accession
Article 4(2) TEU requires the Union to respect the equality of Member States before the Treaties. A country admitted under the Commission’s proposed system would nevertheless remain exposed for 15 years to an additional enforcement mechanism capable, in the most serious cases, of suspending its Council voting rights. Existing Member States would not be subject to that accession-specific procedure.
Equality does not require complete legal uniformity in every aspect of accession. Accession treaties have long contained transitional rules allowing some obligations or rights to operate differently during an initial period. The Commission’s 2026 Communication itself recalls traditional sectoral safeguards associated with previous accessions and contrasts their shorter operation with the proposed institutional clause (European Commission, 2026).
The constitutional question is one of degree and subject matter. A fixed 15-year limit makes the proposal different from permanent unequal membership. At the same time, Council voting rights concern participation in one of the Union’s central institutions, making the proposed differentiation more constitutionally sensitive than many transitional measures governing economic integration or regulatory adjustment.
Duration is consequently relevant but not decisive by itself. The seriousness of the triggering conduct, the proportionality of the response, the availability of judicial review, the frequency of reassessment, and the conditions for lifting a measure would all influence whether the safeguard could still be characterized as genuinely transitional rather than as a form of institutional subordination.
3.1 Temporary Derogations in CJEU Case Law
The Court addressed the broader problem of post-accession inequality in Commission v United Kingdom, Case 231/78. The case concerned agricultural import restrictions, not voting rights, but the Court rejected an interpretation of the accession arrangements that would have allowed a distinct legal position for new Member States to continue indefinitely. It recognized that provisional inequalities might be justified while indicating that their indefinite continuation would conflict with equality between Member States (CJEU, 1979).
A related principle appears in Commission v Poland, Case C-127/17. The Court stated that EU law applies to new Member States ab initio and in toto, except where transitional derogations have been expressly provided by the accession arrangements. The judgment confirms that differentiated treatment after accession is possible, but only where the legal basis for the derogation is clearly established and transitional in character (CJEU, 2019).
The Grand Chamber returned to accession and equality in Commission v Poland, Case C-448/23. It emphasized that a Member State is bound from accession by primary law and by pre-accession acts of the Union institutions, subject to reservations contained in its Act of Accession. It also connected the uniform application of EU law with equality of Member States before the Treaties (CJEU, 2025).
These cases do not decide the legality of the proposed safeguard. They establish the relevant boundary conditions: new members normally enter the same legal order as existing members; express transitional derogations may exist; and indefinite inequality is much more difficult to reconcile with equal membership. The unresolved issue is whether 15 years and the possible suspension of Council voting rights remain within those transitional limits.
4. How the Safeguard Differs From Article 7
Article 7 TEU already provides a Treaty mechanism for addressing threats to the values listed in Article 2. Under Article 7(1), the Council may determine, by a four-fifths majority and with the consent of the European Parliament, that there is a clear risk of a serious breach. Article 7(2) permits the European Council, acting unanimously under the conditions laid down in the Treaty, to determine the existence of a serious and persistent breach (TEU, Article 7).
Once such a determination has been made under Article 7(2), Article 7(3) allows the Council, acting by qualified majority, to suspend certain Treaty rights of the Member State concerned. The Treaty expressly identifies the voting rights of that Member State’s representative in the Council as rights that may be suspended. The state remains bound by its Treaty obligations despite the suspension.
The proposed accession safeguard would not replace Article 7. The Commission describes Article 7 as retaining a central role in responding to the gravest breaches of Union values. The proposed mechanism would operate alongside it for a defined period after accession and would also extend to serious breaches of sincere cooperation, which Article 7 does not list as an independent trigger (European Commission, 2026).
4.1 Reverse Qualified Majority
The most distinctive procedural feature is the proposed decision rule. A measure initiated by the Commission, or following a reasoned request by Member States, would be deemed adopted unless the Council rejected it by qualified majority within a specified period (European Commission, 2026). This creates a reverse-qualified-majority structure.
The difference from Article 7 is substantial. Article 7 requires the institutions to assemble the Treaty majorities necessary to make successive positive determinations. The proposed safeguard would instead make Council opposition necessary to prevent a measure from taking effect once the procedure had reached the relevant stage.
The Commission links its proposed system to concerns about the practical difficulty of acting under Article 7, whose thresholds include a four-fifths majority and, at its most serious stage, unanimity in the European Council. The new mechanism would change the decision-making default rather than simply reproduce Article 7 under a lower numerical threshold (European Commission, 2026).
5. Judicial Review and the Unresolved Treaty Questions
The Commission states that measures under the proposed safeguard should remain subject to judicial scrutiny. It does not yet identify the precise jurisdictional route, the permissible grounds of challenge, or the intensity of review. Those questions cannot be answered conclusively until the safeguard is incorporated into a concrete accession arrangement (European Commission, 2026).
Article 269 TFEU illustrates why the distinction from Article 7 is legally important. That provision gives the Court of Justice limited jurisdiction over acts adopted by the European Council or Council pursuant to Article 7 TEU. Review may be sought by the Member State concerned and is confined to the procedural stipulations of Article 7, subject to the time limits prescribed by Article 269 (TFEU, Article 269).
A measure adopted under a separate accession safeguard would not become an Article 7 measure merely because it pursued a similar protective objective. The Commission Communication does not establish which judicial-review provisions would govern the new mechanism. The applicable route and scope would depend on the final legal form of the safeguard and any rules accompanying it.
Other procedural questions are also unsettled. The Communication refers to a reasoned request by “Member States” without specifying the number required. It does not state in the institutional-safeguard passage whether the targeted state would participate in the Council decision under the reverse-qualified-majority procedure. Article 354 TFEU excludes the state concerned from specified Article 7 votes, but that rule applies expressly to the Article 7 framework (TFEU, Article 354).
The duration of an individual voting-rights suspension also remains undefined. The Commission establishes a 15-year period for the operation of the safeguard and envisages regular reassessment of measures, but it does not set a fixed maximum duration for a particular suspension. These details will materially affect proportionality, procedural fairness, and the constitutional assessment of the mechanism.
6. Would the Safeguard Create Second-Class Membership?
“Second-class membership” is a political description rather than a category recognized by the Treaties. A state admitted under the proposed system would still become a Member State of the Union. Article 16(2) TEU provides for one representative of each Member State in the Council, while Article 20 TFEU establishes that every national of a Member State is a citizen of the Union (TEU, Article 16(2); TFEU, Article 20).
The difference would lie in enforcement. New members whose accession arrangements contained the safeguard would remain exposed to an additional procedure for 15 years, even though the substantive obligations under Articles 2 and 4(3) TEU would also bind older Member States. That asymmetry gives the “second-class” criticism constitutional significance even though the expression itself has no independent legal effect.
The counterargument begins with Article 49. Accession conditions are negotiated, transitional derogations have long formed part of enlargement law, and accession instruments may contain primary-law provisions. The proposed system would also have a fixed endpoint and, according to the Commission’s design, measures should be proportionate, judicially scrutinized, reviewed regularly, and lifted when the underlying problem has been remedied (European Commission, 2026).
6.1 Equal Membership and Temporary Differentiation
The strongest legal objection concerns the nature of the right exposed to suspension. Council voting is part of a Member State’s participation in Union decision-making. A special procedure capable of removing that vote reaches more directly into institutional membership than many conventional transitional measures governing the pace at which particular economic or regulatory rules take full effect.
The case law does not establish a numerical limit beyond which transitional differentiation becomes unlawful. Commission v United Kingdom identifies the danger of indefinite unequal treatment, while Commission v Poland, C-127/17, confirms that expressly provided transitional derogations may exist. Neither judgment determines how long a differentiation affecting institutional participation may permissibly continue.
The 15-year safeguard would therefore occupy unsettled constitutional territory. Its fixed expiry supports the argument that it is transitional, but its duration and potential effect on Council voting make it difficult to treat as an ordinary accession adjustment. The legality of the final arrangement would depend on its precise primary-law basis, procedural safeguards, proportionality, and compatibility with the Article 4(2) requirement of equal Member State status.
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Conclusion
The European Union appears to have a credible legal route for creating a temporary safeguard capable of suspending a new Member State’s Council voting rights. Article 49 TEU permits conditions of admission and Treaty adjustments to be incorporated into accession arrangements, and Court of Justice case law confirms that accession instruments may contain primary-law provisions and expressly defined transitional derogations.
That conclusion has clear limits. The Commission’s October 2026 Communication does not itself create a power to suspend voting rights, and the 15-year period is not a predetermined 15-year sanction. The safeguard would first have to be translated into binding accession provisions, and significant questions concerning procedure, duration, voting arrangements, judicial review, and proportionality remain open.
The central constitutional issue is equality. EU law permits temporary differentiation between existing and newly admitted Member States, but it does not support indefinite inferior membership. No Court of Justice judgment has yet determined whether an accession-specific enforcement regime lasting 15 years and capable of suspending Council voting rights remains a permissible transitional arrangement. Until the final treaty provisions exist and their legal effects can be assessed, that question remains unresolved.
References
Consolidated version of the Treaty on European Union (2016) Official Journal of the European Union, C 202, 7 June 2016, pp. 13–45 [online]. Available at: https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:12016M (Accessed: 5 October 2026).
Consolidated version of the Treaty on the Functioning of the European Union (2016) Official Journal of the European Union, C 202, 7 June 2016, pp. 47–200 [online]. Available at: https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:12016E (Accessed: 5 October 2026).
Court of Justice of the European Communities (1979) Commission of the European Communities v United Kingdom of Great Britain and Northern Ireland, Case 231/78, judgment of 29 March 1979, European Court Reports 1979, p. 1447, ECLI:EU:C:1979:101 [online]. Available at: https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:61978CJ0231 (Accessed: 5 October 2026).
Court of Justice of the European Communities (2003) Republic of Austria v Council of the European Union, Case C-445/00, judgment of 11 September 2003, European Court Reports 2003, p. I-8549, ECLI:EU:C:2003:445 [online]. Available at: https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:62000CJ0445 (Accessed: 6 October 2026).
Court of Justice of the European Union (2019) European Commission v Republic of Poland, Case C-127/17, judgment of 21 March 2019, ECLI:EU:C:2019:236 [online]. Available at: https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:62017CJ0127 (Accessed: 6 October 2026).
Court of Justice of the European Union (2025) European Commission v Republic of Poland, Case C-448/23, judgment of the Court (Grand Chamber) of 18 December 2025, ECLI:EU:C:2025:975 [online]. Available at: https://eur-lex.europa.eu/legal-content/EN/CASE/?uri=CELEX:62023CJ0448 (Accessed: 7 October 2026).
European Commission (2026) Preparing for a Wider Union, COM(2026) 705 final, Strasbourg, 6 October 2026 [online]. Available at: https://commission.europa.eu/document/download/19022e79-d2b4-4d13-bdc6-0185da92856a_en?filename=COM-2026-705_en.pdf (Accessed: 7 October 2026).