Vietnam has reacted to the tariff announcement by proposing a reduction of their tariffs on US goods to zero.
Will that stop the trade deficit?
Will the export of Buicks to Vietnam surge?
So I've heard. And so have several other countries including Israel. I think that they will just be the first of many.
"Will that stop the trade deficit?"
It will stop a good part of it! In case you missed the math, the US has been paying an additional 90% for everything that they sold in Vietnam. And the story is much the same in other countries. How many stores would you continue to do business with it they charged you an additional 90% above the purchase price?

Yes, I realize that in this case the US is selling and not buying but it's still an out of pocket cost in either case.
Will the export of Buicks to Vietnam surge?
Buicks probably not but Ford trucks, definitely yes! I've lived and worked in some of the Asian countries and you would be surprised at how many American automobiles that you see there. And BTW, Buicks and Ford trucks aren't the only thing that America makes and sells abroad. Just to name a couple of categories, MOST of the large industrial equipment and most of the scientific grade TE in countries like VN all comes from the US. US made farm tractors are also used world wide.