You don't seem to understand the type of damage it would do to discontinue our trade relationship with China.
It's not just some company would lose a few million dollars in share value.
It would be economic collapse. Rolling blackouts, civil unrest, supply chain disruption, starvation, overwhelmed health services, no fuel, rioting, suburban gang violence, hyper inflation.
China would just be able to buy everything they don't already own and take everything else.
Sometimes it takes courage to stare down an adversary, and not blink when they fire off a few scary flares.