Not dodging questions here. All of this (i.e my dad getting his SSN and his CDL) happened 20 years ago and 10 years ago, respectively, so it is hard for me to remember. Also during that time, I was in school, so to be honest, I was not thinking about such matters then. Now that I am able to help my parents out, I am just seeking the opinion of people on this forum. I understand that each case is different but out of stress, I am trying to see what others have experienced in a similar situation.