The European Commission has opened an infringement file against Spain over its migrant regularization drive. The trigger was a complaint from Junts, the Catalan party that has spent the last decade making Madrid's life difficult from the Congress benches. Read that sentence twice. A regional nationalist party filed the paperwork, and Brussels is now asking whether a national government has followed EU law when it handed out legal status by the hundred thousand.

Madrid has framed the regularization as a humanitarian win. People who were already living, working and paying into the system without papers were brought into the light. That framing is not false. It is incomplete. A regularization is an admission that the ordinary channels did not work. If the legal route for work and residence had been functioning, there would have been no large pool of undocumented people to regularize. The amnesty is the receipt for the failure.

The Commission's move changes the register of the story. Once it is an infringement file, the question stops being whether the policy is kind and becomes whether it is lawful: whether the criteria were consistent with the directives on residence and returns, whether the procedure respected the rules, whether a member state can simply decide to grant status in bulk and expect the rest of the Union to absorb the consequences. The humanitarian language does not survive contact with that vocabulary. Compassion is not a legal category.

Spain has a long record here. The 2005 mass regularization under Zapatero processed several hundred thousand applications and was defended then as a one-off that would clean up the informal economy. Spanish governments have returned to the same tool roughly every decade since, which is what a one-off looks like when it becomes a method. The Ley de Extranjería has been amended so often that its own commentators need a changelog. Meanwhile the number of removal orders that are issued and never executed sits in the record as a parallel fact nobody in Madrid likes to put next to the regularization figures.

The regional layer makes it worse. Seventeen autonomías run their own social services, their own arraigo arrangements, their own offices and their own enthusiasm for or resistance to national policy. The Catalan party complaining to Brussels about a Madrid decree is the same political ecosystem in which regions blame the centre for every shortage and the centre blames the regions for every failure. Nobody has to answer for the whole chain, so the chain keeps getting longer.

What the note does not get to say cleanly is what a functioning Spain would look like. It would need a legal migration channel tied to real labour shortages, a removal system that actually removes people whose claims have failed, and a regularization that is the exception rather than the habit. Each of those costs money, staff and political nerve. The regularization costs none of them in the short run, which is why it keeps getting picked.

So the uncomfortable part is this. Spain's economy needs workers, its pension and care systems need more of them than its birth rate will produce, and the country has repeatedly chosen to fix the gap by declaring it closed rather than building the machinery to manage it. Brussels is now the one asking the procedural questions. The answers will probably arrive in a form that lets everyone claim a win, which is how the file on this issue has always been kept.