The US and Canada have long been friends and allies. The US considers Canada to be part of it. Both the US and Canada have worked together on several occasions to improve security for both countries, and other issues. The United States seeks constructive relations with a stable and open China. Security is one area of interest as there are approximately 100,000 American soldiers in the Asia-Pacific region.
China has nuclear weapons.
Therefore, it is important that the US and China continue to maintain very active bilateral trade relations. France will also tend to side with the United States, although it has made it clear that it will not follow the U.S. blindly on any issue. There has been some bad blood over the last few years over the issue of nuclear testing. France has been trying build its own nuclear arsenal and the U.S. has been wary of this. France has also been calling for the lifting of sanctions on Iraq, an action the U.S. strongly opposes.