2. The tariffs are producing revenue for the Federal government. Hundreds of billions per year. To remove the tariffs arbitrarily in the future, a President would need to assume the political risk of increasing the national deficit.
3. Trump imposed tarriffs on his first term that Biden did not reverse. Even if the next President is a Democrat it's more likely than not that the trade deals remain in place.
4. A strong contender for the next president is the current vice president, JD Vance, who would be highly unlikely to reverse.
Trump didn’t initiate sweeping tariffs in his last term, and they weren’t wildly unpopular. Trump is accumulating enough bad will at the moment to make it very politically easy for someone to wash away everything if they win the 2028 election.
If Trump's moves pan out in the positive for American people over the next year or two, controversial as they may be in the present, then sentiment will increase, plain and simple.
JD Vance is quite popular among Republicans and reasonably popular among independents, which is all you need to win the presidency. The Democrats, on the other hand, have no heir apparent and have quite a few structural issues within their own party at the national level. We'll see what the actual field looks like in 2028 but that is a long ways off and a lot will change between now and then.
