Republican nominee Donald Trump will not give an inch when it comes to describing President Obama as "the founder of ISIS."

Trump's description of the president as responsible for the Islamic State terrorist organization is not new, but the GOP nominee has decided to amplify his caustic rhetoric and reiterate the attack with 88 days remaining until the 2016 election.

Radio host Hugh Hewitt attempted to help Trump explain away the "founder of ISIS" remark in an interview on Thursday morning, but Trump would have none of it.

"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," Hewitt said.

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

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

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

Trump also doubled down on the inflammatory criticism in an interview with CNBC on Thursday.

"Do you think it's appropriate to call the sitting president of the United States the founder of a terrorist organization that wants to kill Americans?" asked a CNBC host.

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

Trump argued his point and then asked, "Why, is there something wrong with saying that? Are people complaining that I said he was the founder of ISIS?"

The GOP nominee punctuated his argument by claiming that he was simply a "truth teller" and he did not know what the result would be in the minds of voters.

"If at the end of 90 days, I fall in short because I'm somewhat politically correct, even though I'm supposed to be the smart one and even though I'm supposed to have a lot of good ideas, it's OK," Trump told CNBC. "I go back to a very good way of life. It's not what I'm looking to do, I think we're going to have a victory, but we'll see."

He added, "At the end it's either going to work or I'm going to have a very, very nice, long vacation."

Trump's time spent defending and doubling down on his recent controversial remarks left him less time to criticize Clinton, who is set to deliver a major speech on the economy on Thursday afternoon. The GOP nominee briefly labeled it a "phony speech" in the interview with CNBC, but spent more time waving away criticism of his style.