回複：如何更改或延期 H1B I－94 卡上的有效時間？

According to a recent USCIS memo, the USCIS local offices can only correct mistakes on I-94 cards that were made by USCIS.They cannot correct errors on I-94 cards issued at the airport or any other Port of Entry (POE) by the U.S. Customs and Border Protection (CBP). Since you I-94 was issued by CBP, you will have to make the request for a correction directly with the CBP and follow their procedures. This is generally possible by requesting the change at the Port of Entry where one entered or at the POE where the person works or resides. Procedures at the various POEs differ, and it may be more difficult in some jurisdictions than others to get the CBP to agree to make corrections.