Vice President Joe Biden said Donald Trump’s claims that President Barack Obama “founded” the Islamic State were “outrageous” during a joint appearance with Hillary Clinton on Monday.

“That is an outrageous statement,” Biden said during his speech in Scranton, Penn. “But let me tell you why it’s a dangerous statement. As he might say, the bad guys are listening.”

For proof, the vice president quoted the leader for the terror organization Hezbollah who quoted Trump’s claims about ISIS and said it was “not simple speech.”

Biden, a son of Scranton, traveled to his hometown in Pennsylvania to stump for the Democratic presidential nominee Hillary Clinton. Though the trip to the blue-collar town was meant to trumpet Clinton’s policies to benefit the middle class, Biden couldn’t help but weigh in on the elephant in the race.

After declaring Clinton the “only person who will possibly help you” if you live in a town like where he grew up, Biden laid out a case for how a Donald Trump presidency could harm America’s national security.

“No major party nominee in the history of the United States has known less or has been less prepared to deal with our national security than Donald Trump,” Biden said. “Hillary has forgotten more about American foreign policy than Trump and his entire team will ever understand.”

The Vice President said Trump’s “cynicism is unbounded” and his “shame has no limits” in his winding speech, during which he also affirmed his belief that Clinton is the nation’s best bet for the nation’s middle class. He brought back a popular line from his Democratic National Convention speech where he said Trump “doesn’t have a clue” about how to deal with the Middle Class.

“She has always been there,” Biden said. “And let’s state the obvious, that is not Donald Trump’s story.”

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