Joe Biden told attendees at a Thursday dinner in Denver, CO that terrorism is not an “existential threat” to the United States’ national security.

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“Will there be another attack in the United States like Boston, [like] we saw in California?” Biden asked during his speech at the University of Denver’s annual Korbel dinner. “If you had to bet, probably sometime there would be.”

“We’re a nation of 320 million people,” he continued. “American people know in their gut. There is no existential threat to the security of the United States of America.”

He also joked to the crowd that the “way to become the most popular politician in America” is to “announce you are not running for president.”

Biden’s appearance marked the first time a sitting vice president had visited the University of Denver.

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