Allegedly, the incoming US president wants to impose trade tariffs as soon as he comes into office. The danger is they impose trade tariffs in return and we get a trade war.
In the 21st century a tariff war benefits nobody. We need free trade with everyone playing on a level field.
One thing is likely to happen is inflation will rise in the USA. Making things in the USA is likely to put up wage costs.
Like it or not, the world is shrinking.