Before 2015, the CC was not a Court of Justice. However, through the Organic Law 15/2015 of 16 October 2015, it was reformed to receive new powers with which to enforce its decisions, forcing judges, courts and public administrations to act with urgency if the court asked.

This was not only met with criticism by judges of the court, but also by many external jurists and the Venice Commission which strongly criticised giving the CC the task to execute its own judgments, usually attributed to other state powers.

In consideration of EU concern about Poland's and Hungary's constitutional violations, the EC mandate increasingly appears weak and petty.
Europe Can't Remain Silent Over The Catalan Crisis
Europe's silence on Catalonia risks EU credibility
The European Commission refuses to answer
Mayor of Barcelona calls for EU to mediate in Catalonia

"It is my obligation as mayor... to call on the European Commission to open a space for mediation between the Spanish and Catalan governments to find a negotiated and democratic solution," she wrote.

Barcelona "does not want a collision with unforeseen consequences. I am convinced most of our European partners do not want that either," she said.