It is not "the US" that imports Japanese or Chinese electrical appliances, but an individual from the US, or a group of Americans. They import these appliances because they believe that a profit can be made. And governments ought not interfere in these transactions.
Tariffs inflict harm on real people, empowering bureaucracy and the state, while destroying the rights of real-world entrepreneurs and consumers. Yet, some people claiming to support free markets are perfectly fine with this.
Mises’s insight into the importance of Cantillon effects can be further extended to explain not only income and wealth inequalities among individuals but also some rather curious developments in global industrial organization over the last few decades.