You are right to worry. One Trump administration could be overlooked as a mistake on American corporations behalf (lets admit that American voters really don't count). But a second one, that is inexcusable. The US has had a very lopsided deal in its favour with all Western countries since the end of WW2. The Americans have effectively killed that. That agreement doesn't suddenly come back with a new adminstration. Especially since every other country knows it can be facing a different Trump in 4 years.