兩個月前( 十月中）通過在USCIS ELIS網上提交I-539表 (Application To Extend/Change Nonimmigrant Status) 申請f2轉f1，現在狀態是“pending review"。 上個禮拜去學校國際學生辦公室問事情，突然告訴我他們聽說現在處理時間變成了5個月！！大家有聽到這種說法嗎？學校一月中開學，如果真的是5個月的處理時間，那肯定趕不上了。所以現在準備今年年底或明年年初去加拿大換簽證。
問題是：
1. 現在預約美國在加拿大的領館的簽證麵試，必須先要在網上添D-160表（Apply For a Nonimmigrant Visa) 和交簽證費。問題是如果我填了I-160表，交了錢，會不會屬於重複申請啊？
-No. When you leave US during the F-1 application pending, the pending F-1 application will be invalid automatically and USCIS will deny it later. Of course, this denial does not matter to you because you will get the F-1 visa to come back from Canada to have F-1 status.
2. 如果上述申請不衝突，那麽我什麽時間/采用什麽方式來取消網上I-539的申請？
-Do nothing (see above) or send a mail to USCIS to withdraw it (include the copy of the I-539 receipt).
今天打電話問USCIS，和看到它網站上列的處理時間都還是2.5個月。我已經等了兩個月，就這麽取消了網上申請，真有點不甘心。想著去加拿大簽證前能等拖多久就拖多久。大夥有什麽建議嗎？
-No one knows when USCIS will approve your case there, so you need to make a decision by yourself.
另外如果去加拿大換簽證，現在還得申請加拿大的旅遊簽證。時間不多，十分緊急。請大夥多幫忙。萬分感謝！
問題是：
1. 現在預約美國在加拿大的領館的簽證麵試，必須先要在網上添D-160表（Apply For a Nonimmigrant Visa) 和交簽證費。問題是如果我填了I-160表，交了錢，會不會屬於重複申請啊？
-No. When you leave US during the F-1 application pending, the pending F-1 application will be invalid automatically and USCIS will deny it later. Of course, this denial does not matter to you because you will get the F-1 visa to come back from Canada to have F-1 status.
2. 如果上述申請不衝突，那麽我什麽時間/采用什麽方式來取消網上I-539的申請？
-Do nothing (see above) or send a mail to USCIS to withdraw it (include the copy of the I-539 receipt).
今天打電話問USCIS，和看到它網站上列的處理時間都還是2.5個月。我已經等了兩個月，就這麽取消了網上申請，真有點不甘心。想著去加拿大簽證前能等拖多久就拖多久。大夥有什麽建議嗎？
-No one knows when USCIS will approve your case there, so you need to make a decision by yourself.
另外如果去加拿大換簽證，現在還得申請加拿大的旅遊簽證。時間不多，十分緊急。請大夥多幫忙。萬分感謝！
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