Besides the time and cost to do that, which may make it uneconomic, there is also the fact that their inputs would be subject to tariffs in the US and exports t

Besides the time and cost to do that, which may make it uneconomic, there is also the fact that their inputs would be subject to tariffs in the US and exports to other countries from the US would be subject to retaliatory tariffs. Your point is basically Trump propaganda at this point. Tariffs have historically had unintended consequences. For instance the tariffs on LCD screens basically killed the laptop industry in the US. Maybe, just maybe, after 20 years of tariffs it might come true, for a limited selection of products, but consumers would be paying higher prices in the meantime, which may destroy the market.