CNN’s Jim Acosta is a smart, insightful, and savvy journalist. But he should not be a beat reporter, at least not at the Trump White House. He has violated the two inviolable rules of journalism: He allows his bias to show, and he becomes part of the story he is assigned to cover.

At President Trump’s recent press conference in India, Acosta said this to the president, who accused his network of being dishonest: “I think our record on delivering the truth is a lot better than yours sometimes.”