It's time to open up the European Court of Justice

A lot of attention has been paid in recent years to how the European Union regulates different sectors, from renewable energy to digital markets and artificial intelligence. Much less has been given to a crucial tenet of democratic accountability — how the EU institutions regulate themselves.

The most recent example is the European Court of Justice/Court of Justice of the European Union (ECJ). In stark contrast to several other regional courts, the EU court does not allow for public a...