请问8老师，想给父母第二次延期，不知道行不行？
-No law limits that, but USCIS may not approve it unless they have convincing reason, e.g. serious illness and need to be treated within US.
听说难度比较大。如果可以的话，理由应该写什么为好？谢谢。
-No law limits that, but USCIS may not approve it unless they have convincing reason, e.g. serious illness and need to be treated within US.
听说难度比较大。如果可以的话，理由应该写什么为好？谢谢。
