President Trump made it clear during his presidential campaign that tariffs will be a part of his policy-making. He has followed through on that. Tariffs are risky. Yes, they can be used as a political tool, and can get results. But tariffs can also turn very bad, especially when egos are revved up. American history is littered with the use of tariffs going very bad. President Trump, and the American people, should always keep this in mind.