The USCIS sent me a notice by mail, but is indicating that it was undeliverable. What could be the cause of this, and what can be done to fix this issue?
Answer The USCIS normally delivers by secure mail. If the postal service cannot verify that your mailbox belongs to you, then they may not deliver it. You should first confirm that the USCIS has your correct address. If you've moved to a new address since filing...