Given a similar product (most) consumers will do the usual---buy the cheapest one, If that country comes to some reciprocal agreement with the USA then the American import will be cheaper then in was in the past.
Its hard to realize why all the hostility about this move from America--(other then from the usual people) I lived in Oz for about 25 years , when I got there they were making so many products -- its was cheaper for companies like ford to set up a plant there because of import tax, They even made their own home grown car--"The Holden" which they exported , country not much smaller then USA, with at that time had a population of New York state.
In the 1980s they went the opposite way to what Trump is trying to do in America--
Some people now feel that China owns it
Google---
1970: Manufacturing accounted for over 25% of all Australian jobs.
1970s: The manufacturing sector experienced a decline in its share of total employment.
1980: The share of manufacturing employment had fallen to around 19%.
Factors contributing to the decline: Tariff barriers were rolled back, leading to increased international competition
Now----6.8% of all employment. “Manufacturing is in Australia