Passport covers are mostly just a larger version of the Mini Composition Book Cover, but because the latter takes up an entire 5×7 hoop, the non-split version requires a 6×10 or 8×8 machine.
There’s a split version for 5×7 hoops available in my Ko-Fi shop.
This is copyrighted by Silver Seams in the year noted in its URL, and licensed under Creative Commons’ CC-BY-SA. This basically means you’re free to sell items you make from it, provided you give reasonable attribution, and that if you modify it you’re required to share your changes with the world under the same license (the actual legal bits are in the link).
As with other free embroidery patterns here, the SVG file is included in the ZIP package so you can modify it in Inkscape and produce your own variations/sizes/etc.