When the exchange rates go crazy because nobody wants dollars. That being said, the USD is the key currency of the world so we have been able to avoid that issu

When the exchange rates go crazy because nobody wants dollars. That being said, the USD is the key currency of the world so we have been able to avoid that issue. If the US causes the world to look away from the USD, it is game over for the US lifestyle. Screwing the rest of the world by printing USD is a bit like the Norway oil fund - it is an amazing source of wealth that will not last forever and should be spent wisely. The US is doing anything but that.