It's actually the opposite and the American dollar, is hanging by a thread and that's no lie. It's not the American people to blame for what's happening, it's their Government, who are running the Country into the ground. The same thing is happening here in the UK also. The Brics nations are backing up their currencies with gold and other commodites of value. All the US have to back up their currency is debt, as the gold is all gone. You might say "Oh it's in Fort Knox?" The last time an audit was done on the gold there, was in the 1970's. I bet you it's all gone now though? Squirrelled out of the US, by greedy politicians who have sold it all behind your backs and deposited the ill gotten gains in offshore bank accounts. Why do you think that inflation is going through the roof in the US? It's because they're printing more money to prop up the $31 trillion debt, but that house of cards can collapse at any time though!

The US was taken off the gold standard back in the 1970s and the dollar is backed by the "full faith and credit of the United States." which may not mean much, but even China doesn't have enough gold to back up all their currency. Their laws are in place to prop up whomever is in power at the time, and while the US legal system is under attack from Republicans, they're still holding, and soon enough, other republicans seeking power will use the laws to take down the ones who've abused the power they once had (Trump).
It's irrefutable that the US dollar is in most of the currency trades and for good reason. Everybody agrees to its validity. All the BRICS countries hate the US, but without fail, each will accept dollars for trade.