While Donald Trump’s children have mostly managed to stay out of his crosshairs, Trump allegedly got into a feud with his youngest son, Barron, over his 6 feet 7 inches of height.

In “Siege: Trump Under Fire,” Michael Wolff claims that Trump is so insecure about Barron’s towering height eclipsing him that he refuses to be pictured next to him.

During an appearance on “The Last Word with Lawrence O’Donnell,” Wolff further revealed that “[Donald] is jealous of everyone’s height.”

According to Wolff, Trump “never lets himself be in a photograph with someone taller than he is.” Height is clearly a very touchy subject for the former U.S. President.