The USA is losing its military dominance. It is not adapting fast enough to changing technologies that make killing Americans in war easier. Still, there are many military objectives it could achieve over potential enemies, but the US is not willing to take the casualties necessary to achieve those objectives, and America’s potential enemies know it.
Cut-throat competition is supposed to benefit the consumer, but in China, in an effort to lower prices as much as possible, it led to cheating, cutting corners, illegality, and the spread of foodborne illnesses. This food was produced in a manner that would not pass a basic inspection.
A great strategic advantage that the US has traditionally had over China is that the US had many allies and partners. Recently, the US has been undermining this great strategic advantage.
Trump praised Xi like a sycophant. Xi did not return the words.
Trump has accelerated American decline. Further polarizing the country, getting the US into a so-far unsuccessful war with Iran, weakening relationships with allies, removing quality immigrants along with the bad ones, increasing corruption, weakening the ability of the country to tax its wealthy citizens, broad and unstrategic tariffs that weaken the US economy, etcetera…