Prominent presidential historian Douglas Brinkley doesn’t think Donald and Melania Trump‘s marriage is “hinged right.” “In modern times, we haven’t had such an awkward marriage — one that seems to be frozen. It doesn’t seem to be a very organic thing,” Brinkley, a professor of history at Rice University and CNN’s presidential historian, tells PEOPLE. The first couple’s public image has been defined by viral video of Melania, 48, swatting away her husband’s hand when he’s tried to hold hers. “That scene of the hand swat,” says Brinkley, “is a visual metaphor for a marriage that isn’t hinged right.” It’s...