I'm still waiting for a decision (see information in the signature) but again
our case is different from your: CEC inland with
outland dependent +
I have travelled to the USA but my spouse has never been to the USA.
We decided that it would be safe to actually prove that there are no criminality-related concerns from the USA for both of us. That's what actually PCC confirms. It does not tell whether or not you visited this country or how many days you spent there.
And the fact that you were in a certain country can be easily confirmed using all the data from our profile (for instance, BIO + travel history, address history and etc.). IRCC conducts a lot of checks including information sharing that should reveal this.
Good luck with your case!
P.S: sometimes I feel like these ADRs they send to us are just to justify their long processing time if you know what I mean
I have colleagues who were asked to provide a marriage certificate, IELTS certificate and scanned diplomas, even though such were already present in their profile.