Right, they will print $10 trillion one day, and then return to the gold standard the next.

Trump has talked up the gold standard in the past to please conservatives but the notion is ridiculous at this point in time. It would only be done after a full US government default and currency reboot and even then, an outright gold standard is unlikely. I think a hybrid system of central bank reserve backing and free floating exchange is more likely. I don't think we'll see the Keynesians killed off that quickly.