Russia Ukraine war, page-202673

I believe that Canada, France and Spain have not met their 2%

Trump recalled how as president he told an unidentified NATO member that he would withhold U.S. help and “encourage” Russia to do as it wishes with allies that do not contribute enough to military spending. “'You didn't pay? You're delinquent? '” Trump recounted saying.

It stands to reason from that comment that if you are paid up and not "delinquent", Trump would allow USA would come to their aid.

Of course if Canada was to be attacked USA would help Canada anyway.