After news broke of a possible terror attack in Nice, France, Fox News hosted Donald Trump for a phone interview in which host Greta Van Susteren allowed him to attack President Obama and Hillary Clinton with debunked lies about refugees fleeing the war-torn Middle East.

At 5:44 PM ET time, Fox News reported a large truck had been driven through a crowd celebrating Bastille Day in Nice, France, killing dozens.

At 7:20 PM ET time Donald Trump phoned into live coverage of the attack on Fox News. During the interview, Van Susteren allowed him to use falsehoods about Syrian refugees entering the United States to attack Obama and Clinton. 

DONALD TRUMP: Hillary Clinton wants to allow 550 percent more than Obama and Obama is allowing a lot of people to come in. We have no idea who they are. They are from Syria, maybe. But they have no paperwork many times. They don't have documentation proper. I would make it -- I would not allow people to come in from terrorist nations. I would do extreme vetting. I would call it extreme vetting, too. And, you know, our country has tremendous problems. We don't need any more of the problems. Right now we have more investigations of this kind going on than we have ever had in the history of our country and we are going to allow thousands and tens of thousands of more people coming.

Trump’s attack on Obama and Clinton over the refugee vetting process has been debunked numerous times, with PolitiFact writing:

The vetting begins with the United Nations High Commissioner for Refugee, which determines who counts as a refugee, who should be resettled (about 1 percent) and which countries would take them. This alone can take four to 10 months.

If the UNHCR refers refugees to the United States, they then face scrutiny from federal intelligence and security agencies.

Their names, biographical information and fingerprints are run through federal terrorism and criminal databases. Meanwhile, the refugees are interviewed by Department of Homeland Security officials. If approved, they then undergo a medical screening, a match with sponsor agencies, “cultural orientation” classes and one final security clearance.

Syrian refugees in particular must clear one additional hurdle. Their documents are placed under extra scrutiny and cross-referenced with classified and unclassified information.

The process typically takes one to two years or longer and happens before a refuge ever steps onto American soil. Ultimately, says the State Department, about half are approved, and there’s no real precedent of a terrorist slipping in through the vetting system.