I forgot sumbit I-94 when I left USA. Should I mail it back? What is the address I should mail. Should I mention the reason, the flight No and the date I left US while I mail it?
-If you will stay in
If you will stay in China for long period, such as over 3 months, then make a copy of boarding pass, the I-94, passport with entrance date to China, and a letter for explanation to the following address:
ACS- INS SBU
POB 7125
London, KY 40472-7125