Do you realize it's the USN that guards the global oceans right?
It is what most navies of relvant size do. Even ours has dozens of ships on the other side of the globe to discourage pirates.
And China is building nuclear-powered aircraft carriers that will threaten everyone just like how you accuse the US of doing.
China is bad with aircraft carriers.
China wants trade with us and crtainly will protect, not threaten our shipping.
China has never threatened us militarily nor is ever likely to do.
Even if China had aircraft carriers, it could not not properly project power with them near us, because it lacks any bases and nealy all local ports and navies are allied with each other.
And while the US regularly threatens us even when we on paper have a better relationship, China never has.
I really really don't care how many aircraft carriers China has. It is not a military threat. Nor will it harm our grobal trade. Now the US also won't threaten us militarily, even if demanding terrotory from its supposed ally Denmark is more more than eyebrow raising, but the US does regularly threaten our trade and meddle in our econmy and our politics.
The only ones reasonably afraid of China are its direct neigbours it has claim on (Taiwan, South China Sea).
It is on the US to behave like a better partner than China. And as less of a threat.