By accusing President Obama of founding the Islamic State, Donald Trump has endangered the lives of U.S. troops stationed overseas, according to Vice President Biden.

Biden made this claim during a campaign rally for Hillary Clinton in his childhood hometown of Scranton, Pa.

"You know, that's an outrageous statement. But let me tell you why it's a dangerous statement. Why, as [Trump] might say, 'The bad guys are listening,'" the vice president said.

Biden then quoted the head of Hezbollah, Hassan Nasrallah, as saying in reference to Trump's charge against the president: "This is an American presidential candidate who is saying this. What he says is based on facts and documents."

The crowd in Pennsylvania was not happy to hear this.

"If my son were still in Iraq," Biden said Monday, "and I say to all those who are there, the threat to their life has gone up a couple clicks. It has gone up a couple clicks."

"Ladies and gentlemen," the vice president added, "does [Trump] have any idea the adverse consequence these outlandish comments have on our allies, our friends and the physical safety of our troops? Trump is already making our country less safe."

Trump said at a campaign rally in Florida last week that Obama "founded" the Islamic State, and said the marauding terrorist group "honors" the president.

"In many respects, you know, they honor President Obama," the Republican candidate told a crowd of supporters. "He's the founder of ISIS. He's the founder of ISIS. He's the founder. He founded ISIS."

"I would say the co-founder would be crooked Hillary Clinton," he added.

Later, in an interview with talk radio host Hugh Hewitt, Trump stuck to his assertion, and reiterated his claim the president founded the terrorist group.

Hewitt first offered Trump an out by saying, "Last night, you said the president was the founder of ISIS. I know what you meant. You meant that he created the vacuum, he lost the peace."

Trump refused the lifeline.

"No, I meant he's the founder of ISIS. I do," the GOP nominee said. "He was the most valuable player. I give him the most valuable player award. I give her, too, by the way, Hillary Clinton."

Hewitt interjected, "But he's not sympathetic to them. He hates them. He's trying to kill them."

"I don't care," Trump said. "He was the founder."

The GOP candidate said again in a separate interview Thursday morning on CNBC that Obama "founded" the Islamic State.

"He was the founder of ISIS, absolutely," Trump answered.

The GOP nominee later said on social media that he was being " sarcastic" about Obama founding the Islamic State.