I am not American so I will focus on the overall analisis and your great mistake (we will go on it later).

First as an introduction let me show you that all this phenomena is not new: since the 50’s we call it here in latinamerica populism, escencially since we were allowed to have universal vote our political sistems usually worked under this sistem. Populism can be both far right or far left (just compare Fujimori with Castro) and usually (despite there are very important exceptions) have a nacionalistic aproach to economy, making our models somehow a guide of how would be a post-Trump/Bernie victory.

Now lets focus on your error: globalism is neither unnstoppable nor new. Many economists (Keynes, Friedman, Pikkety and Chang) agree that the history were somehow like this: you got the most radical economic and political liberalization from all the times in the late XIX century (mixed with the colonization of Africa and Asia of course) and due to the First World War, the anti-colonial resistance and the 29’s crisis simply the vast mayority of the world shifted to a more local, nacionalist aproach. If you think that in that era you could go from Portugal to Russia with simply a passaport, or that you could leave the boat either in Argentina, Australia, Southafrica, Brazil or US and become a new citizen, or even the fact that after the end of slavery on Brazil those free woman and men returned by teens of thousands to Africa and they were asimilated by those societies (especialy in Nigeria). So with all this globalization process when the things got mad (both economicaly and politicaly) the world simply switched in 20 years to the most nacionalist era in the world history (the cold war, decolonial wars against Europe’s empires, communism on full bloom, etc.). To again switch with the fall of USSR and the victory of the neoliberalism on anglosaxon world. So yes if wanted globalization can be stoped,as it were in the past.