Ah, I missed the "clicking on the American flag" detail. That would have saved me from googling the US tariffs section and scrolling thru all the exceptions (which were mainly unfinished goods).
I'd still check with US Customs and asks them to check to see if the tariffs for what you want ever came down in 2020 since Doge mentions the tariffs at their inception in 2018 and nothing else since. It couldn't hurt.
All the best,
Nonoise

