Hello,
My wife just became a US Citizen. She would like to file I-130 for her parents. She also has a 20 year old unmarried sister that lives with her parents in India. We can file separate I130 for each parent. Does her sister qualify to be a minor under her parents file or do we need to file her through brother/sister category which take long time? What is the fastest way for my wife's 20 year old sister to come to USA?