The great thing about the US economy is that our economic activity/GDP largely "circulates" within the country. Less than 10% of our economy is export-based unlike China's which is export-dependent. The US could theoretically "withstand" an import cut from Chinese goods. We could buy cheap goods from other countries like India. BUT, unfortunately for the US, China 'kinda' keeps our national debt in check by buying large sums of US Treasury. So if China unloads/sells them in retaliation, it could spell trouble.
That's odd, most everything I see is made, assembled, or manufactured in some other country...mostly China.