They typically send the certificate separately from the passport, and it can take up to six weeks to arrive. They usually send it via regular mail without tracking. If you still don’t receive it after six weeks, contact them. Hope this helps! I pulled this piece of information from a very reliable source called skiplegal.ai P.S. I came across something exciting for anyone pursuing family-based green cards or citizenship. A new service is launching soon to make these processes much more affordable. Early access waitlists with discounts are open so let me know if you’d like more info!