Absolutely, and any further "transfer of sovereignty" from members to EU institutions requires a new Treaty, to be ratified by all - a most unlikely event in the current climate. Some limited further transfer may happen by "institutional creep" but nothing fundamental. That is why I suggested greater public health (or at least pandemic prevention and management) as possible less controversial area for further integration. There is already a European Medicines agency which coordinates certification of medicines. This could be extended to centralised procurement and distribution of strategic stocks of vaccines, medicines and equipment.

Index of Frank's Diaries