母親十二月簽證到期，準備給她辦延期。另外一家準備一月坐郵輪去墨西哥。如果簽證過期，尚在等待延期時，能否坐郵輪離境呢？
-If her I-94 expires, she needs to have a valid visa in her passport to re-enter US. If she leaves US when the B2 extension is pending and her old I-94 expires, her pending B2 extension is useless because she reenter US using a valid visa and get a new I-94 at the port of entry.
還要給她辦辦墨西哥的簽證是不是？
-Not need Mexico visa to enter Mexico if she will stay in Mexico for a short period of time (e.g. one month or less).
