Danish Prime Minister Mette Frederiksen has requested the European Union investigate Spain’s plan to legalize approximately 600,000 undocumented immigrants. Frederiksen voiced her concerns during a recent EU summit in Brussels, questioning the legality and potential impact of the Spanish government’s initiative. The plan aims to grant formal residency to long-term, undocumented migrants currently residing in Spain. Frederiksen believes a thorough evaluation by the EU is necessary to ensure compliance with existing European laws and regulations concerning immigration. She emphasized the need for consistent immigration policies across the EU member states. The Danish PM's request signals growing tension within the EU regarding differing approaches to managing irregular migration. This development could lead to increased scrutiny of Spain’s immigration policies by the European Commission.