[jqpabc123]

Once tariffs are in place for a year or two it is possible that, domestic producers have expand capacity

Once tariffs are in place for a year or two it is possible that consumers will be paying higher prices for inferior goods from providers that can't compete elsewhere.

In other words, there are both positive and negative effects --- and no clear way to predict which will prevail.

It's 19 century economics applied in the 21st century --- it's direct government interference in the marketplace --- the opposite of what Republicans spent decades railing against.