A letter of support (commonly referred to as a "family invitation letter") is not required for your family member to apply for a tourist (B-2) visa to visit you in the US. Please note that ISP does not issue invitation letters. Our policy is based on guidance directly from US Department of State and from colleagues at colleges and universities across the United States.
If you choose to provide such a letter youself, ISP provides a sample letter you may personalize.
Students requesting an Enrollment Verification letter may do so directly through REGIS.