I am currently in the process of filling for green card for my mother and submitted form I-485. I received response from USCIS requesting additional information and also sent to me a copy of Supplement A to I-485. Do I need to file form Supplement A to I-485 and pay the $1,000? Her I-94 expired about a year ago, although it is still in her passport.I am a US citizen and my mother entered the US with a tourist visa in November 2009. Form 1-130 was filed a month (April 2010) before her I-94 expired in May 2010 and was approved in Decemer 2010. I-485 sumbitted in March 2011. An A number was assigned with request for additional information and Supplement A to I-485 received in April 2011.