need advise I have a question.I will be coming a USC next month hopefully. I want to sponsor my parents.The problem is my parents already visited US 6-7 time & always left the US on time.Last time in 2005 my aunt who was a us citizen was sick & diagnosed with blood cancer, so my parents applied for their extention of B2 60 days before I-94 expires & included all the evidence her sister is in ICU on death bed & she is staying with her so give her some comfort.We also got a letter from the doctor & hospital paperwork. But after 2 months they got extention denied. At that time my aunt was very sick so we never appeal.Long story short they voluntarily left the country after 4 month of over stay but less than 180 days where they be barred from entry.Later on my aunt died of that cancer.Now any one can advise me how to take the case from there.Do i have to file a waiver first or file I130 and then councellor processing.There B2 has already expired & they never applied for a new visa.My father is 78 yr & my mom is 65yrs old. Any advise.??