On 9 May 2019, 12 Presidents of European Senates signed an op-ed (PDF - 33 Ko)which was published in various European newspapers, such as in:

- Austria (PDF - 6.69 Ko);

- France (PDF - 344 Ko);

- Germany (PDF - 1.43 Mo);

- Poland (PDF - 830 Ko);

- Romania (PDF - 48 Ko).