Except you
can't do it at any time. America tried this logic with the motor vehicle (and offshored it), then the semiconductor (and offshored it), and now we're seeing it for pretty much every other manufactured commodity America is known for. What do we make, anymore?
There's a simple explanation for why this happened: America really believes in free market competition. Even when we're getting reamed by global competitors in cost and quality, someone always presupposes that this manufacturing capacity can come back. But that's not how it works; products are worth what people will pay for them, and if the trade value goes down then the gross domestic product will follow.
It's a blatant vulnerability of democratic capitalism. I'd like for you to be right, but I live in America. I don't know if anything on my desk was made in America; I don't even know if my desk itself was made domestically anymore. America isn't a rung on the manufacturing ladder, you could remove us entirely and only stand to increase your margins.