Click on the link related to your activity in Mexico to view your visa requirements. Invitations are coming soon and will be sent in 3 phases.Candidates must complete the Affidavit of the Nominee section. If USCIS approves your Form N400, Application for Naturalization, we will schedule you to take the Oath of Allegiance at a naturalization ceremony. You should include the name of the host, formal expression, the event purpose, date, time, and venue, contact details, and RSVP. You can download an invitation letter from a link in your acceptance notification email. If you are NOT PRESENTING, you MUST REGISTER for the meeting first. Template of Parent Invitation Letter to a Parent-Teacher Conference. Template of Parent Invitation Letter Word document. I am writing this letter to inform you about the upcoming__( mention the occasion or the event) It has been a while since we all have met up.