What should applicants do if they have a name change after submitting the N-400?

Providing documentation of the name change during the interview is the correct approach for applicants who undergo a name change after submitting the N-400 application. This is important because the USCIS needs to maintain accurate records that reflect the applicant's current legal name. By presenting official documentation, such as a marriage certificate or court order, the applicant ensures that their application is processed correctly and that all records match the name they are currently using. This can help avoid delays or complications in the citizenship process.

Ignoring the name change, requesting a refund of the application fee, or reapplying would not address the requirement to update personal information correctly. Ignoring the change could lead to discrepancies in records, while requesting a refund does not align with the process of updating an existing application. Reapplying might unnecessarily complicate matters instead of simply providing the correct documentation at the interview stage. Thus, presenting documentation during the interview is the most appropriate and efficient response.