I applied to sponsor my parents in 2010. I just received a letter requesting additional information. The problem I have is, my Dad is the principal applicant and my mom is the spouse including two dependents. My problem is, my mom won't be accompanying my Dad again because I have another brother who is a sickle cell patient and constantly needs help so my mom can't leave him a lone back home. Bottom line is my mom will not be immigrating to Canada with my Dad. Will that cause a problem. Also, since my mom will not be immigrating to Canada, does she still need to submit copies of her passport and identification, and do medicals etc. Because getting a passport in my country is quite expensive and I don't want to waste money I don't have getting a passport that will not be used. Can my Dad migrates only with his two dependents? will that cause a problem? Thanks a lot for your reply.