Everyone is quick to deride this move as stupid. I don’t disagree that there are downsides to the approach, but there is a set of very real national problems that this might address. For instance, globalization and offshoring of production has made goods cheaper for consumers, but what about the former domestic producers who could not compete, and do not have the skills or capital to find a new job which pays as well…
At a high level, the problem is that free trade makes the pie bigger, but causes distribution/inequality problems. So generally speaking, the best measures are going to be those that improve inequality while minimizing the impact to the size of the pie. Raise taxes on the wealthy, increase spending on social programs to the non-wealthy, fund investments in programs that benefit everyone equally. (Public transit, libraries, healthcare, education, etc.)
Tariffs shrink the pie, and I'd heavily bet against those hurt by globalization being those who are able to grab a bigger slice under the current administration.