They've been trying since 1945. Not a ton of progress to show for it.
The problem for us is that much of the world seems committed to ditching the dollar.
In theory, I suppose. And contrary to public opinion probably a good thing for everybody, including the United States, if they could pull it off. Sadly it doesn't seem to be happening. Dollar remains dominant.
This is not 1945 America. It is deeply in debt and starting to experience uncontrollable inflation.