Hello nairalander,pls I want to know if it is possible to get a 2 years US visa for a Graduate(Msc)program on a Nigerian Passport with the validity of 1year(expires October 2015). I have received the 1-20 from the school(western Michigan University) and also paid the sevis fees.......I tried renewing the passport but was told by the immigration officers that I can't do it till expiration.The school has given admisssion for the fall(september) and I am due to the go for my interview in August...... Pls I will be grateful if anybody in the house can help me with these question. P.S- This is my first post and will appreciate it if I get candid answers