From Part 3 Country Specific Instructions for USA:
POLICE CERTIFICATES AND CLEARANCES
Police certificates or clearances from each country in which you and every one in your family aged 18 years or over have resided six months or more since reaching 18 years of age. You must attach the original police document(s).
Agree with CharlieD10. When they mention your family on these forms, they mean only the non-Canadian members. Your spouse is a Canadian citizen (and applies to a Canadian PR as well), so doesn't need one.
It is only on the Additional Family Form that 'your family' actually means what it does in normal English: parents, spouse, children, siblings.