Because he's a reckless fool that no elected officials are willing to step up and stop. Impulsive decisions about foreign diplomatic affairs, wars and frivolously spending without restraint. The United States is heading into BANKRUPTCY. Soon.
... or maybe a stupid lunatic, or a stupid, inhumane lunatic. Or, maybe an evil, stupid, inhumane, arrogant, selfish, obnoxious,....... Oh, never mind. You get the picture!