Transcript for President Obama's Toughest Attacks Yet on Donald Trump's Terrorism Views
The Orlando terrorist attack is sparking a war of words now between president Obama and Donald Trump. The president unleashing his toughest attack yet on trump and ABC's Jon Karl is in Greensboro, North Carolina, where trump responded overnight. Good morning to you, Jon. Reporter: Good morning, Amy. This was president Obama's most aggressive attempt yet to use the bully pulpit to take down Donald Trump and to try to discredit his ideas on fighting terrorism. We now have proposals from the presumptive republican nominee for president of the United States to bar all muslims from emigrating to America. This is a country founded on basic freedoms including freedom of religion. We don't have religious tests here. Reporter: Point by point the president labels trump's ideas on America. If we fall into the trap of painting all muslims with a broad brush, and imply that we are at war with an entire religion, then we are doing the terrorists' work for them. Reporter: As for trump's criticism about how president Obama describes terrorism. He still doesn't even use the word of radical islamic terror. There's no magic to the phrase "Radical Islam." It's a political talking point. It's not a strategy. Not once has an adviser of mine said, man, if we really use that phrase, we're going to turn this whole thing around. Not once. Reporter: And he went on. They know full well who the enemy is. So do the intelligence and law enforcement officers who spent countless hours disrupting plots. And protecting all Americans including politicians who tweet. Reporter: Trump's response came overnight at a rally in Greensboro, North Carolina. He was more angry at me than he was at the shooter. That's the kind of anger he should have for the shooter and these killers that shouldn't be here. Reporter: Trump is fighting a two-front political war. Hillary Clinton piling on too. He has to distract us from the fact he has nothing substantive to say. We don't need conspiracy theories and pathological self-congratulations. We need leadership, common sense and concrete plans because we are facing a brutal enemy. Reporter: And after trump it suggested that president Obama is disloyal. Last night he seemed to suggest that American troops had embezzled cash in Iraq. Now, the trump campaign later said that he was actually talking about Iraqi soldiers but some vets didn't see it that way and Hillary Clinton quickly tweeted out video of trump's comments.
This transcript has been automatically generated and may not be 100% accurate.