Dudewitbow
Most of the U.S exports tend to be business to business, mostly oil/oil based manufacturing(including plastic/resin), Big pharma (tools and drugs), then followed by other sectors like some major crops/food (e.g 2nd largest in the world for Soybean and Corn, behind Brazil, and the gap between the two and the next is more than 2x the size, Second in pork, behind Spain and the list goes on), and various tech related stuff that sell for high margin (e.g pushing nvidia to be the next trillion dollar company)
Despite the wars, Vietnam itself never really antagonized the U.S. Ho Chi Minh himself admired the U.S and the war was just a necessity on their side to have a reset button on the government. People in Vietnam tend to be extremely open about adopting random trends that came out of the western countries.
For instance, Jalepenos werent a part of vietnamese culture, but was used as an esrly substitute for thai chilis while in the U.S, it became soo popular that the trend reversed course back into Vietnam and became much more popular. Other western things like Heineken(Dutch) is extremely popular in vietnam.
While Vietnam’s current government is communist in origin, it leaves the door for culture to come in and out basically freely. Some of its most famous foods have western origins, and its fairly common for chefs for instance to move to vietnam to start restaurants there.
The only people Vietnam might have legitimately not liked was France (during french occupation) and ancient China during the periods of Nam Viet being a province. (And maybe Pol Pot’s version of communism)
San Jose is quite a drive from LA
How i see it is that the pro ukraine/pro palestine people is the situation that those were primarily the people that were already there, and that the conflict would end if the other side would leave.
If Israel won, it would still be surrounded by countries that dont want them there, which leads to endless conflict. Ukraine would be in a similar situation (sans Hungary, Belarus)