US enjoys so many advantages as being the world’s reserve currency. I remember after 2008 and other political troubles some countries tried to get rid of the dollar as the worlds reserve currency. The Euro was then viewed as a more stable currency, others wanted the Chinese Yuan.
But look at the world now. The EU is falling apart. Most have negative interest rates. China has had a rough 18 months with a slowdown, partially due to Trump’s trade war, but also HK. The world doesn’t trust China.
Many might hate Trump but the US is the most stable and growing economy in the world. Governments want to buy dollars just like investors want a sound and growing company.
That may change but there is no country on the horizon ready to take our place. Certainly not China with the communists running the country.