Stahl attempted to move the conversation on, but Trump was eager to keep going. “Well, no, even the way you asked me a question, like, about separation. When I say Obama did it, you don't wanna talk about it,” he said.

Trump had previously repeated a false claim that the administration of his predecessor Barack Obama had a similar practice of separating families who crossed the border into the United States illegally.

Trump continued to ignore Stahl’s attempts to change the subject.

“When I say I did it, let's make a big deal of it,” he said. Trump then added: “I'm just telling you that you treated me much differently on the subject.”

Stahl tried to sidestep the debate, telling Trump that “I disagree, but I don’t want to have that fight with you.”

Trump snapped back: “Lesley, it's okay. In the meantime, I'm president, and you're not.”

A new government watchdog memo says the Trump administration waived rigorous background checks for all staff working at the nation’s largest detention camp for migrant children .

The memo, obtained exclusively by The Associated Press, says the former director of the federal Office of Refugee Resettlement personally signed off on sidestepping requirements for child abuse and neglect checks at the tent city in Tornillo, Texas.

None of the 2,100 staff has gone through FBI fingerprint checks either