回复：父母来美入关时.

My Mom came here on Oct 29 from Dallas, the officer didn't ask her any qeustion and just checked her passport,I-94, and round trip ticket. and although my mom said she will stay 3 months, the office still stamped her I-94 until April 27th 2004.
But my friends'parents came to Dallas at the same day, they only bought one-way ticket, the officer called my friend's cell phone to ask why they bought one-way ticket and the purpose of the trip,got a little bit trouble. Finally officer let them in with 6 months stay in their I-94 card.
hope those info is helpful.