He's not saying it's going to fail, whatever that means. He's saying it's going to lose value. Not only can that happen, but historically it happens with 100% p

He's not saying it's going to fail, whatever that means. He's saying it's going to lose value. Not only can that happen, but historically it happens with 100% probability. We can only argue about how much and how quickly. At some point the US will lose reserve currency status. It's happened to every reserve currency before the USD and will happen again with probability of 1. The question is only how soon.