For the benefit of HN readers, no serious economist supports tariffs in any form. Tariffs appeal to the naive idea that trade imbalances between two nations are a bad thing. They simply are not a bad thing. But due to the political history of tariffs it becomes possible for politicians to claim (falsely) that tariffs will benefit the economy, when in fact they are (at best) a handout to specific industries. What real…
> traditionally have frowned upon receiving welfare You weaken your (otherwise solid) argument when you do that. Tariffs and welfare are two different things, and you know that, and everybody reading this knows that, but you try to sneak in a conflation anyway. They're both bad, but they're bad for different reasons: accepting that taxation is a necessary evil (I'm not sure I do, but set that aside), welfare involves…
If Mr. Widget isn't competitive at $100 vs. imports sold at $90, and you add a tariff of $10 so its "competitive", suddenly Mr. Widget's sales will increase. The other country, knowing their widgets aren't competitive (except $$ wise) then tariffs something like solar panels to protect a nascent solar panels industry.
Tariffs are a form of welfare for domestic corporations. Creating a new Mr. Widget on the assumption that tariffs will remain the same is an expensive gamble you take only if you are sure your widgets are better than Mr. Widget's widgets.
Subsidized loans (i.e. "The Bank of Boeing") are another example of welfare for domestic corporations.