Here is another point. They don’t want US dollars here. It isn’t WW2 any more. The most valued and steady currency in the EU is the Danish Kroner. I live in Norway, and everyone within the EEC wants to come here to work and earn Norwegian Kroner because they are worth so much, and the pay is higher here because of the cost of living. I know several Poles and Brits and Germans that come here to work in the construction industry on a seasonal basis, live as cheaply as possible here and take their earnings back home, converted into their own currency, rubbing their hands together with glee. Young Swedes come here to work in the hospitality industry because the pay is so much better and it helps them save for travelling around the world.
For me, the opposite is true. I am among the lower 10% of earners here in Norway, so I like taking the Norwegian Kroner that I earn, (I’m on an hourly rate that translates into about 27.50USD) and bring it to the US because my buying power is much greater there.