The US national debt continues to grow because they are creating more debt every second of every day. Holding all the assets in the whole world wouldn't prevent that debt from growing as long as they create more of it!
there's another government shutdown looming apparently. what do you think the odds are they don't print more money? everytime they are going to print more money. you can bank on that.
Unfortunately the economists in our world have been too stupid to be able to come up with any other solution. They just repeat the same thing over and over and print more money each time they run out of it. Which is like stealing from every one.