ABC News’ Jonathan Karl writes in his book “Betrayal: The Final Act of the Trump Show,” that when former President Donald Trump left the White House, he threatened to leave the GOP. WATCH THE FULL EPISODE OF ‘WORLD NEWS TONIGHT’: WATCH OTHER FULL EPISODES OF WORLD NEWS TONIGHT: WATCH WORLD NEWS TONIGHT ON HULU: #JonathanKarl… Continue reading New book account of what Trump said day after he lost election