A family member who lives outside the country can write a letter of support for immigration. While obtaining a letter from someone not physically present may be more challenging, letters from family members who live abroad can still be valuable in demonstrating an applicant's ties to their family and the United States. It's essential to ensure that the letter is translated correctly into English if necessary and that the family member's relationship to the applicant is clearly established. The letter should also include the family member's contact information in case immigration authorities want to verify the information provided.