How To Write An Immigration Letter For A Friend . How to write a letter of support for immigration. My name is [ name of the sender] and it is a privilege for me. Sample immigration letter of support for a family member from milkconceptstore.com It can be drafted by a friend, coworker, employer, or family member. 3.4 state the person’s work ethic. People choose to immigrate either willingly when offered employment opportunities, educational purposes or unwillingly to escape violent conflicts.