A letter of invitation or Affidavit of Support is not needed to apply for a visitor visa. To request an invitation letter, please complete the MCAA 2023 Letter of Invitation Request Form as soon as possible.I would like to invite you to the United States of America to stay with us for three months. It would be very nice to have you with us. Clearly state the purpose of the applicant's intended visit to the United States, along with the proposed dates of their arrival and departure. There is no requirement for an invitation letter. If you want to send on send it to your parents who in turn may present it to the US consulate. It may include information about the U.S. immigration status of the international student or exchange visitor. An invitation letter from you. I am requesting that a tourist (B-2) visa be issued to (Person you want to invite), in order to allow them to visit me in the United States.