If you will use your credit card abroad, I recommend obtaining a credit card that charges no fees for international use. (personalfinanceinsider.com)
Also, Fi fits well with people who travel a lot internationally, but as we've seen, Straight Talk also comes with a package for international use. (nashvillechatterclass.com)
This use increases US$ demand so, as long as international use of the US$ increases, the USA (and other reserve currencies) gets goods «for free», just in exchange of printing money3 for people who want to use it as reserve or for buying other goods in international market. (politics.stackexchange.com)