Article 7 allows the Council of the EU to revoke membership rights of membership countries, without reducing their membership obligations.

There is currently talk to invoke this against Hungary, which is using the unanimity requirement of the Council to extract benefits from the EU.

Article 7 requires:

• 80% of membership states (the 'target country' doesn't get a vote), i.e. 21/26

• Simple majority in the European Parliament

https://eur-lex.europa.eu/EN/legal-content/glossary/suspension-clause-article-7-of-the-treaty-on-european-union.html