The European Commission has proposed new safeguards allowing voting rights and funding to be restricted if future EU members breach fundamental European rules after accession, as Brussels prepares for possible membership of Ukraine, Moldova, Albania and Montenegro.

The European Commission has set out a new framework for enlargement that would allow the European Union to impose restrictions on recently admitted countries for up to 15 years after accession if they retreat from commitments on democracy, the rule of law or other fundamental EU principles.

The measures form part of the Commission’s new pre-enlargement policy review, published on Tuesday, which examines how the EU’s institutions, budget and policies would have to change before another round of expansion. Brussels says the Union could accommodate additional members without rewriting its treaties, but would need stronger safeguards to prevent enlargement from making decision-making more difficult.

Under the proposals, accession treaties could contain an institutional safeguard allowing action against a new member that seriously breaches the values contained in Article 2 of the Treaty on European Union or the principle of sincere cooperation. In the most serious cases, Council voting rights could be suspended.

The Commission’s public summary describes those arrangements as temporary, targeted and reversible. Reporting on the underlying proposal indicates that the enhanced safeguard could remain available during the first 15 years of membership.

The proposal addresses a problem that has moved steadily up the enlargement agenda: how to ensure that a country continues to meet membership conditions after it has entered the EU.

Germany, France, Belgium, the Netherlands and Luxembourg had already raised the issue earlier this year. As EU Today reported in June, the five governments called for mechanisms capable of restricting some rights of new members if democratic standards deteriorated after accession.

The Commission has now turned that political argument into a wider institutional proposal.

The change is particularly relevant to Ukraine, Moldova, Montenegro and Albania, which Brussels identifies as the four candidates currently furthest advanced. The Commission says it will prepare indicative roadmaps for each country provided reform momentum continues.

Ukraine and Moldova may also make further progress within days. EU Today reported earlier on Tuesday that two more negotiating clusters could potentially be opened next week if Ukraine’s parliament passes legislation dealing with minority-language education.

Alongside stronger rule-of-law safeguards, the Commission wants candidate states to be integrated gradually into parts of the EU before full membership. Energy, transport, digital policy and defence are among the sectors identified for deeper participation.

Brussels is also proposing greater use of qualified-majority voting during the accession process, including for decisions to open negotiating clusters. At present, individual governments can delay progress at several stages because unanimity is required.

Another proposed safeguard would require a newly admitted state, for a limited period, not to block subsequent enlargements because of bilateral disputes. The measure reflects long-standing difficulties in the Western Balkans, where disputes between neighbouring states have repeatedly entered accession negotiations.

Ukraine’s agricultural sector presents a separate challenge. The Commission says transitional arrangements could be used for agriculture, sensitive products, EU funding, the movement of workers and participation in common systems. Reporting on the package indicates that unrestricted access by Ukraine to existing Common Agricultural Policy support is unlikely immediately upon accession because of the scale of Ukrainian farming.

That question is politically important for existing agricultural beneficiaries, particularly in Central and Eastern Europe, where Ukrainian grain and food imports have already caused disputes.

The institutional proposals do not guarantee membership for any candidate. Accession remains dependent on meeting the EU acquis, completing negotiations and obtaining the agreement of existing member states.

Nor has the 15-year safeguard yet become EU law. The Commission has asked the European Council and European Parliament to take forward discussions, and the eventual provisions would have to be reflected in future accession arrangements.

What has changed is the shape of the enlargement debate. Brussels is no longer concentrating solely on what candidate countries must do before joining. It is also designing mechanisms governing what happens after they enter.

For Ukraine, Moldova and the Western Balkans, that could produce a more credible path towards membership, but one accompanied by conditions extending well beyond accession itself.