Comment by seanmcdirmid

US Treasuries have terms, if you aren’t refreshing your treasury buys, it is the same as selling them. US treasuries and by extension USD was useful because it could soak up billions of dollars of savings (debt for America) without taking a huge inflation hit (treasury rates were often less than inflation, so you still take some hit).

As for where that money is going now? Other currencies and saving instruments probably..