Hello, I sent N-400 application via USPS express mail to USCIS lockbox at 2501 S. State Hwy 121 Business Suite 400 Lewisiville, TX 75067. The package was supposed to be delivered the next day by mail. However it was not delivered and when I track it on USPS website it says it has been FORWARDED to a different address in Lewisville and gives no further information
. Does anyone know what is going on? and what happens if USPS doesn't deliver it? Thanks for your input......