I and my wife are on B2visa.We got extension of stay for six months after the initial six months and we are currently in B2 status.Our daughter who will be a citizen shortly wants to sponsor us for greencard.Intend filing I-130 &I-485 simultaneously.I have been thinking of going personally and filing the papers in the local INS office.Is there any problem/risk in this approach? If we so decide, should both of us go or one of us going will be good enough? The INS office concerned is Philadelphia.