Poland challenges supremacy of EU law in snub to Brussels

Polish court rules some articles of European Unions treaties unconstitutional, widening rift with Brussels.

Poland’s top court has challenged the supremacy of European Union law in a landmark ruling, widening the diplomatic rift between Warsaw and Brussels.

Defying a key tenet of European integration, the Constitutional Tribunal on Thursday declared some articles in EU treaties “incompatible” with its national legislation and unconstitutional.

The court also warned EU institutions not to “act beyond the scope of their competencies” by interfering with Poland’s judiciary, which has been a major bone of contention with Brussels.