USPS is United States Postal Service. They didn't deliver the package once it was received in Australia.
Or does Australia's postal service have the initials USPS too? Not being a pedant, just don't know. (Aside: UK entirely privatized their postal service which is sad given history and doesn't seem to be working out so well.)
Australia has Australia Post, as well as a number of private package delivery businesses but I don’t think any of them are called usps.