During the House of Representatives Budget Committee meeting on March 3, legislative concerns regarding the government's approach to including maiden names on official documents were raised following Prime Minister Sanae Takaichi's statements on March 2. Takaichi had indicated that documents requiring strict identity verification, such as passports, driver's licenses, and My Number cards, should consider using both maiden and registered names. This shift in policy direction created uncertainty about the government's initial directive to explore the potential for allowing single-name identifiers based on maiden names.

Opposition lawmaker Chinami Nishimura questioned Takaichi about the government's intentions and whether her directive to investigate the possibility of single-name usage had been retracted. Takaichi clarified her stance by asserting that while the framework for single-name identification should be prepared, she did not negate the consideration of dual naming, especially for documents linked to stringent identity verification requirements. This positioning reflects the ongoing complexity and dialogues within the government regarding the implementation of simultaneous maiden name usage on official identification.

The broader context of this discussion touches upon Japan's social norm and legal structure concerning surname usage after marriage, where currently, individuals must adopt either their husband's or wife's surname. Nishimura pointed out the confusion surrounding the government's shifting stances and expressed concern that further discussion around dual naming might be a response to conservative criticism following an initial move towards single-name identifiers. Meanwhile, Justice Minister Hiroshi Hiraguchi expanded on the commitment to maintain the current household registration system while exploring legal frameworks that would facilitate the use of maiden names alongside traditional names on official documents.