Penrose method (rejected) Poland proposed the Penrose method (also known as the "square root method"), which would narrow the weighting of votes between the largest and smallest countries in terms of population. The Czech Republic supported this method to some extent, but has warned it would not back a Polish veto on this matter. All the other states remained opposed. After previously refusing to discuss the issue, the German government agreed to include it for discussion at the June council. The given percentage is the game theoretical optimal threshold, and is known as the "Jagiellonian Compromise". The Penrose method voting weights allocated to the states are shown in the adjacent table. According to the proposal, the requirement for an act to pass in the Council was: Majority of voting weights: 61.4%. Unanimity Certain policy fields remain subject to unanimity in whole or in part, such as: membership of the Union (opening of accession negotiations, association, serious violations of the Union's values, etc.); change the status of an overseas country or territory (OCT) to an outermost region (OMR) or vice versa. taxation; the finances of the Union (own resources, the multiannual financial framework); harmonisation in the field of social security and social protection; certain provisions in the field of justice and home affairs (the European prosecutor, family law, operational police cooperation, etc.); the flexibility clause (352 TFEU) allowing the Union to act to achieve one of its objectives in the absence of a specific legal basis in the treaties; the common foreign and security policy, with the exception of certain clearly defined cases; the common security and defence policy, with the exception of the establishment of permanent structured cooperation; citizenship (the granting of new rights to European citizens, anti-discrimination measures); certain institutional issues (the electoral system and composition of the Parliament, certain appointments, the composition of the Committee of the Regions and the European Economic and Social Committee, the seats of the institutions, the language regime, the revision of the treaties, including the bridging clauses, etc.). Notes External links Voting Calculator for Council decisions A detailed summary of qualified majority voting BBC: Background on the voting weights discussion Analysis and history of voting weights in the Council New winners and old losers. A priori voting power in the EU25 Article at EUABC Full text of the Constitution – Title IV article I-25 Completion of the 5-th enlargement and institutional changes (votes