Fun fact - American made goods are stuck in American warehouses and on American docks right now.
What's the difference if they're stuck on a boat or on the dock?
And it's less a shortage of drivers/warehouses and an inelaasticity in the labor pool.
Stacking warehouses in the Indland Empire has a "shortage" of warehouse workers - yes and no. Short for the super high volume but not short for normal.
You can not just create 15,000 warehouse workers and 20mm sq ft of storage like hitting a light switch.
Running as fast as the "machine" can go with resources available - it's basically 20lbs of crap in a 5lb bag right now and a 5 lb bag is all that's available.