If you are a PR, you can apply for TRPD (if you can enter via USA you can enter by land with just the COPR).
If you are not a PR, you'll have to use whatever other document you have - if valid - and sorry, I know nothing about that.
Note, you must know whether you are a PR or not. Having a COPR does not mean you are a PR. (You have to have 'landed' either physically or virtually)