准备给父母办理延期,原来了看到好多人都是online file的,可是我看到这个好像是不可以online filing 了,只能paper file. 是不是这样的?
https://www.uscis.gov/news/alerts/uscis-discontinues-electronic-form-i-539-form-i-526-and-regional-center-document-library
谢谢!