GOP speechwriter burns ‘wreck of a human’ Donald Trump over McCain obsession: ‘I’m not a child psychologist’
President Donald Trump hugged the US flag as he arrived to speak at the annual Conservative Political Action Conference in National Harbor, Maryland. (AFP / NICHOLAS KAMM)

A Republican former speechwriter and aide to deceased Sen. John McCain (R-AZ) told NPR on Thursday that he could not explain President Donald Trump's obsession with his former boss.

During an interview on Morning Edition, host Rachel Martin asked Mark Salter why Trump continues to attack McCain after his death.

"I'm not a child psychologist," Salter replied. "I would guess he craves the sort of admiration from the corners Sen. McCain received it and [Trump] doesn't get it and resents him for that. I think you generally have to be a wreck of a human being to be jealous of a dead man."

"The problem isn't his disrespect to John or John's family, the problem is Trump," he continued. "He has no self control and he's the most powerful man on the planet. That's what Republicans -- all Republicans -- for the sake of the party's future, for the sake of the country, ought to be saying, ought to be addressing. It's glaringly obvious. This man's unfit for the office."

Listen to the entire interview below.