Biden Mixes Comedy With Dire Warnings on Democracy at Washington Gala

President Biden delivered a mix of jokes and pointed criticisms at the expense of the presumptive Republican nominee, former President Donald J. Trump, at the Gridiron Club dinner in Washington on Saturday.

“One candidate’s too old and mentally unfit to be president,” Mr. Biden said. “The other guy’s me.”

It was Mr. Biden’s first time since becoming president to attend the dinner, a lighthearted night in a series of high-profile gatherings in Washington where politicians and journalists don white gloves and bow ties to lightly roast each other through speeches and skits. The Gridiron Club, one of the oldest journalism associations in Washington, hosted the dinner at the Grand Hyatt in Washington.

Mr. Biden didn’t just target his opponent, though. He saved time for a dig at congressional Republicans and their efforts to impeach him and his homeland security secretary, Alejandro N. Mayorkas.

“The Republicans would rather fail at impeachment than succeed at anything else,” he said. Referring to Leo Varadkar, the Irish prime minister, who was sitting at his table, Mr. Biden said, “He took one look at Congress and he asked for another Guinness.”

But during the roughly nine-minute remarks, Mr. Biden also took a more serious tone to issue stark warnings about threats to democracy. His aides are hoping that emphasizing the stakes of the election in November will rally voters to the polls amid low approval numbers for Mr. Biden.

“Freedom is under assault,” Mr. Biden said. “The lies about the 2020 election, the plot to overturn it, to embrace the Jan. 6 insurrection, pose the greatest threat to our democracy since the American Civil War.”

“A poison coursing through the veins of our democracy,” Mr. Biden continued. “Disinformation