Please fill out the following form in its entirety. We will review your request and follow up with you as soon as possible.Although not a requirement, your U.S. host can write a letter. We've provided a sample invitation letter for a B-2 visitor visa. Go to the My Program section, then the Graduation tab, and click on the Graduation Invitation Letter link. Full Name and Contact Information – The letter should begin with the host's full name, address, and contact details. This article shows how you can make an invitation letter for travel visa in 5 minutes using FlightGen App. The invitation letter must be in the English language, so that US officials can read it. A letter of invitation is a signed letter from the family member or friend who you will be staying with during your trip to the United States. Invitation letters are available to be picked up in the Center for International Programs and Services.