What action should be taken if an applicant cannot attend their N-400 interview?

If an applicant cannot attend their N-400 interview, the appropriate action is to contact USCIS immediately to reschedule. This demonstrates responsibility and a proactive approach to complying with the immigration process. Failure to attend the scheduled interview without prior communication can lead to complications, including the risk of the application being denied due to abandonment. By reaching out to USCIS as soon as possible, the applicant can explain their situation and request an alternative date for the interview, ensuring that they maintain the opportunity to continue with their application process.

The other options could lead to negative consequences. Ignoring the interview does not resolve the situation and may result in automatic denial. Sending an email to the nearest embassy is not the correct process, as embassies are typically not involved in the interview scheduling for N-400 applications. Waiting for USCIS to contact the applicant can lead to unnecessary delays and potentially jeopardize the application, as the responsibility lies with the applicant to inform USCIS of their inability to attend.