As long as you got married after you landed as a PR, you can sponsor your wife for PR but you must be living in Canada in order to do that. Since you are now living in the US as you say, make sure you meet the residency requirement of staying in Canada at least 730 days every 5 years or you will lose your own PR.
If you got married before you landed as a PR and did not update your info, you will not be able to sponsor your wife.
