

It prevents tariffs on inputs, which lowers costs of goods sold for products sold outside the US. Goods sold into the US would still be tariffed, but if the inputs are largely from China, it would still likely be cheaper to manufacture outside the US, not pay the 125% tariffs on inputs, and deal with the lower tariff rate into the States.
I mean, if your costs on inputs are going to go up from 125% tariffs by being in the US, but you can manufacture somewhere that the US is only charging 10% tariffs, it’s a strong incentive to move manufacturing to that low-tariff destination and only face a 10% tariff on what your selling.
What works for any specific company would come down to their own mix of inputs, target markets, and other factors.
From what I read, she moved to Canada more than 10 years ago.