“No one, including Donald Trump, takes him as a serious commentator on, well, anything.”

Incensed when made aware of Mulvaney’s retort, Navarro retorted, “Read Taking Back Trump’s America for the truth about this ungrateful idiot and you decide.”

The Beast sought a further reply from Mulvaney: “The only people who take Peter seriously are those who read his book. And no one read his book."