The Italian Constitutional Court has ruled on the legitimacy of the 2025 citizenship decree, addressing constitutional questions raised by a tribunal in Turin. Specifically, the Court found some challenges to be unfounded and declared others inadmissible regarding the urgency of citizenship regulations. The focal point of this ruling was Article 1 of the decree, which significantly restricts the unlimited transmission of citizenship through descent, known as 'iure sanguinis'.

Previously, individuals could claim Italian citizenship and a passport by simply proving ancestral ties to an Italian ancestor, regardless of their knowledge of the Italian language or culture. However, the new law establishes that individuals born abroad and already holding another nationality would be considered to have 'never possessed' Italian citizenship unless they can substantiate a tangible connection to Italy. This change markedly alters the process of acquiring Italian citizenship and passport issuance based solely on blood ties.

The implications of this ruling are profound, potentially impacting many individuals with Italian ancestry who seek citizenship as a means for migration or residence in Italy. By enforcing stricter requirements, the Italian government aims to control the influx of foreign nationals claiming citizenship by descent and ensure that recipients have a genuine link to the country. This could lead to a decrease in applications and a shift in how Italy manages its citizenship policies moving forward.