let loose in the pages of Michael Wolff
's Trump White House
exposé Fire and Fury, repeatedly firing off insults at Donald Trump
, Jr. and, among other things, calling his 2016 meeting with Russian officials in Trump Tower "treasonous." Even as his former boss Donald Trump
continues to decry the "Fake Book," , Bannon's comments had an impact; Trump took to calling him "Sloppy Steve," , and billionaire Rebekah Mercer, who has funded Breitbart in the past, publicly rebuked him . At some point it became too much for Bannon, who gave a Sunday morning statement to Axios that included an apology to Trump's oldest son.