President Obama fired off a few jokes about Democratic candidate Bernie Sanders Bernie SandersKenosha will be a good bellwether in 2020 Biden's fiscal program: What is the likely market impact? McConnell accuses Democrats of sowing division by 'downplaying progress' on election security MORE, the only candidate to attend this year's White House Correspondents' Association dinner.

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"We've got the bright new face of the Democratic Party here tonight: Mr. Bernie Sanders," Obama said. "Bernie, you look like a million bucks. Or to put it in terms you'll understand, 37,000 donations of $27 each."

"I'm hurt, though, Bernie, that you've been distancing yourself a little from me," he continued. "I mean that's just not something you do to your comrade."