But none of these things would be insurmountable if everything from consumer goods to cars to confection to raw pharmaceutical and industrial ingredients etc didn't solely rely on either Chinese imports or Chinese ocean carriers and port terminals or both.
The situation would be little different, save the bottleneck being truck yards and not cargo ports. The US could have infinitely many cargo ports right now, and the problem would be the same because there are
multiple bottlenecks in the
domestic supply chain, in which sea transport is but
one.
If anything, the problem would likely be
worse thanks to the shift of infrastructural and logistical burden onto
fewer networks (in this case, predominantly road and rail), as opposed to distributed among
several (sea, river, air, road, and rail). "Domestic production" doesn't mean goods materialize from the ether and teleport to their terminus. This ain't Star Trek.
[I mean, we haven't even started talking about rail car, locomotive, and rail worker shortages, and emergent problems with deficiencies in the US freight rail network, yet.]
The problem is in no way related to people across the Pacific ocean, because the level you're looking at is entirely within the realm of effect rather than cause. The problem is late-stage capitalism, specifically prioritizing efficiency, speed, and overhead reduction across
every conceivable level of business at the cost of proper risk assessment, management, and mitigation.
If the root cause of the problem
is indeed international trade, don't hesitate to explain why economic sectors that are almost entirely domestic
and have inelastic demand unlike most luxuries and consumer goods (most notably, agricultural production) have suffered as much, if not more from emergent supply chain challenges.
And a closing thought, "we're having problems now because we didn't impoverish people enough during the pandemic" is...one hell of a take, I'll give you that.