USCIS internal security check

My name check is clear and PD is current. I called the uscis this morning and was told that my case was with an officer, pending due to internal security check. What is the internal check? Any idea about this?

所有跟帖： 

• It is IBIS NC. -quancheng88- ♀ (417 bytes) () 01/23/2008 postreply 08:35:56

• 回複：It is IBIS NC. -小霏霏- ♂ (30 bytes) () 01/23/2008 postreply 08:48:14

• 回複：USCIS internal security check -naozi321- ♂ (97 bytes) () 01/23/2008 postreply 09:23:45

• 回複：回複：USCIS internal security check -小霏霏- ♂ (549 bytes) () 01/23/2008 postreply 10:16:16

• 回複：回複：USCIS internal security check -小霏霏- ♂ (84 bytes) () 01/23/2008 postreply 10:28:41

• 回複：回複：回複：USCIS internal security check -naozi321- ♂ (591 bytes) () 01/23/2008 postreply 11:14:08