A letter of support from a family member with a criminal record could negatively affect an applicant's case for immigration status. Immigration authorities will review all aspects of an applicant's case, including the background of individuals providing letters of support. If a family member with a criminal record provides a letter of support, disclosing this information and fully explaining the circumstances is essential. Depending on the nature and severity of the family member's criminal record, the letter of support could be discounted or viewed with suspicion. In some cases, it may be advisable to seek letters of support from individuals who do not have a criminal record to avoid any potential negative impact on the applicant's case.