Is certified mail lost?

I sent a certified mail to USCIS on July 14,2006. No tracking on USCIS website and the Check has not been charged by USCIS. Is the letter lost? Would you pls give me suggestion what can I do if USCIS has not received the letter?

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• certified mail may take little longer time than others.Check www -xlc- ♀ (94 bytes) () 07/27/2006 postreply 15:39:04

• 回複：certified mail may take little longer time than others.Che -bless123456- ♀ (255 bytes) () 07/27/2006 postreply 16:06:07

• If I were you, I will go post office with receipt and direct tal -xlc- ♀ (245 bytes) () 07/27/2006 postreply 16:35:44

• 回複：If I were you, I will go post office with receipt and dire -bless123456- ♀ (12 bytes) () 07/27/2006 postreply 19:19:22

• my son's green card was lost in certified mail. -古道西風- ♂ (85 bytes) () 07/27/2006 postreply 18:51:59