Once you are a protected person in Canada you should never use your home country passport as it will likely cause you a lot of trouble in the future with IRCC including revoking your PR (most likely when you try to apply for citizenship or renew PR)US Visa question!!!
I've got my PR. Still have a valid US Visa in my passport, but the passport itself will end soon. I don't want to renew passport and will apply for RTD. Is it possible to travel to US with an old passport and RTD without applying for a new US Visa?
Thanks in advance.
You should get your RTD and use it to apply for a new US visa.