You cannot ignore the huge multiplier effect. Parts sourced from overseas won’t be available curtailing domestic production. Then the business slow-down ripples through all of your local businesses that keep the community and local businesses humming. This could set off a major global depression.
In 2017 we imported $475B from the Commies. Even if ALL of those imports were stopped the value of the parts/components sourced from China is not $467B, I will guess it is $100B for academic purposes. $100B in Chmese components will only affect say $100B in US production. $100B in a $22T economy is less then 1/2 of 1% of GDP.