CNN anchor: "Trump's fitness for office is now the top story"
CNN's Brian Stelter: "The tiptoeing is over. The whispers are turning into shouts. President Trump's fitness for office is now the top story in the country. That's partly due to Trump's behavior... partly due to Wolff's book... partly due to Trump's reaction to the book."
ICYMI: Trump chimed in on the subject over the weekend, branding himself "a very stable genius."