Full Name and Contact Information – The letter should begin with the host's full name, address, and contact details. An invitation letter from you detailing the dates of the intended visa and reason for visa.Refer to Family Visitors to the U.S. for an invitation letter template and more details on the visa application requirements. You can either choose to fill in the blanks on the template (it can be filled in online) or create your own letter using the template as a guide. What should the letter say? An invitation letter for a US visa strengthens an application for a visa to visit the United States. 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. Please fill out the form for the Letter of Invitation here. If multiple guests are in need of a letter of invitation, please fill out this form multiple times.