I got my US visa on Canada RTD

[scylla]

Hello sir , I don’t understand you said you extended the old visa ? How
Please explain me a process!

I have a valid visa on my national passport which expired.
I am permanent resident of Canada Refugee status
I came canada via usa with legal canada visa .
Should I have to apply new visa on RTD
Or any other way to get US visa??
Please suggest

Your old visa has most likely been canceled by the US.

Yes, apply for a new visa using your RTD.