The scary thing is that he's done so many inept or questionable things just in the short time since the Presidential campaigns leading up to his 10 months in office.
I thought the most contemptible thing he did was when he disparaged John McCain's military record. I thought that had to be the end of his political career. Imagine the uproar had Hillary Clinton said she preferred war heroes that weren't captured. Trump better hope to God that he never has to suffer what he did for 5 years as a prisoner at "Hanoi Hilton". He was already injured from the plane crash that resulted in his capture which broke both arms and one leg. When he was retrieved from the crash site, he was stabbed with a bayonet and they broke his shoulder with a rifle butt. Later, his arm was broken again by his captors. Today he can't full raise his arms.
Trump callously insulted any soldier who was a POW. My mother's brother was serving in the British army in WWII and was captured in Burma or Thailand. More than likely he was part of the forced labor crew that built a railroad for the Japanese army to use. They called it the Death Railway. His family never heard from him again. A POW that survives the experience in a hero no matter what Trump thinks. For that alone I think that makes him unworthy of the office.
And recent events show that he still is insensitive.... he can't even make a proper condolence call to the families of the fallen. Golfing is more important to him.