The threat to U.S. sovereignty stems from the Leftist political agenda of Global Totalitarian Government.
The threat to U.S. economic superiority stems from the $4 trillion, mostly unconstitutional federal government causing industry to fell our country because of high taxes, unconstitutional suffocating regulations, unconstitutional forced business-killing minimum wage, unconstitutional competitive-killing subsidies (bribes), and unconstitutional union protection. Tariffs fix none of those things. But doing away with those things fixes the problem allowing our industries and economy to take off, grow, and prosper mightily.
Don’t disagree with your assessment. But tariffs can help encourage overseas firms it is more profitable to locate industrial activity in the U.S., as some in China are already doing.