August 4, 2015 4:05 am ‘Tonight': Obama's Debate Advice for Donald Trump Since Gawker leaked Trump’s phone number, President Obama called him with some advice for the first GOP debate. US & World Videos 1:45 NYPD enters Columbia University in riot gear to clear protest 4:28 ‘Apples Never Fall' and ‘Jurassic Park' star Sam Neill reveals his real name 3:21 Katy Perry's surprising regret about cheeseburger Met Gala look 1:01 Biden administration plans to reclassify marijuana as a Schedule III drug 2:28 King Charles returns to public duties amid cancer diagnosis