请问是所有I-765都要经过security check吗？我的时间表如下：
12/19 case received
1/24 request expedition (通过senator)
1/27 request denied, 然后收到：
your constituent’s case has not cleared all required security checks at this time. Until we receive the results of these security checks, we cannot move forward on his case. We cannot predict when we will receive the results of these security checks. Please be assured that we will make every effort to make a decision as soon as the security checks are complete.
我2月份急着回家，我该怎么办？security 一般要办多久才可以clear? 我1个月都没有clear 是出问题了吗？还有是没有applicant 都要被security check吗？还是抽样调查？
