We must stay the most powerful superpower and keep spreading freedom.
It is an endless struggle.
The Chinese economy's growth (and ability to stockpile arms) comes from the trade surplus China enjoys with the US. This means (up front) that the demand for hydrocarbon fuels is rising, which also burdens the US economy, and particularly from the standpoint of a cheap food supply. Large food surpluses are and have been the foundation for all civilization.
When the US pulls the plug on MFN status for China, or even better, places a boycott on Chinese goods -- an eventuality that would be triggered by war -- and cuts off Chinese hydrocarbon exports, implosion will result in China, and the US will enjoy suddenly cheaper energy but suffer from a lack of inventory in dollar stores.