Additional Security Checks

Just received a letter of "ADJUSTMENT OF STATUS NOTICE" from the district office saying that "Additional Security Checks have been submitted and are still pending". Does anyone have any experience, knowledge or idea about this kind of notice? What're the Additional Security Checks? And why?

Any sharing is very much appreciated!

EB2, LC & I-140 approved, FP recently done.

所有跟帖： 

• 回复：Additional Security Checks -li800- ♂ (61 bytes) () 03/25/2005 postreply 20:52:23

• 回复：回复：Additional Security Checks -waitorquit- ♀ (115 bytes) () 03/26/2005 postreply 15:44:33

• 回复：回复：回复：Additional Security Checks -li800- ♂ (117 bytes) () 03/26/2005 postreply 16:39:06

• 回复：回复：回复：回复：Additional Security Checks -waitorquit- ♀ (29 bytes) () 03/27/2005 postreply 20:00:41