When you got the US visa, did you scan a copy of your updated passport and send it to IRCC? I don't want to be too alarming, but if I believe if you didn't, it might appear that you've misrepresented your case. They'll either ask you to send a copy of your passport with the visa again, revoke your PPR and send you back to IP2 OR Ask that you submit your passport at the nearest visa office. Either way, there's a high probability that the presence of the new visa (un-reported) will raise a few eyebrows when your passport is submitted. But this is just a speculation.