Rumour: Is it true? will find out in a few hours: Trump will sport a new hairdo during swearing in. I don't believe it. Trump would never change his hairdo he sported for decades. And if it was a different hairdo - it would be a stunt double! So if the stunt double is the one sworn in as President - then Trump would never have to say those words:
"I do solemnly swear (or affirm) that I will faithfully execute the Office of President of the United States, and will to the best of my ability, preserve, protect and defend the Constitution of the United States."