好像正常来说猎头公司（staffing company）确实不可以opt extension。有这么一段话可以参考。Accordingly, DHS clarifies that students cannot qualify for STEM optional practical training extensions unless they will be bona fide employees of the employer signing the training plan, and the employer that signs the training plan must be the same entity that employs the student and provides the practical training experience.
因为如果我是公司给我opt extend的话，可是我的工资是猎头公司发啊，这是不是有点玩火...以后找到soponsor的工作的话 background check是不是容易毁....
急急急...谢谢...怎么撒金币啊...？有200多呢，撒币求问
谢谢