We will cover how to write an immigration support letter on this page, but it can be helpful to work with a knowledgeable immigration attorney. It highlights some of the main points of emphasis judges look for.Use a business style form. Introduce yourself, then write why you are writing the letter. The letter should be addressed to "Honorable Immigration Judge. " • Introduce yourself, your immigration status, and address. This Immigration Letter for the Church Member serves as evidence of your substantial role in our community.