New York (CNN) - President Barack Obama grew nostalgic and paused with laughter Friday while remembering the noisy controversy over his birth certificate a few years ago.
Speaking in New York at an event hosted by Al Sharpton's National Action Network, Obama was blasting a recent push by some states for stricter voting laws, many of which require various forms of photo identification.
Proponents of the laws argue the provisions help prevent fraud at the ballot box, but critics say they disproportionately affect minority voters, a large swath of whom don't have state-issued forms of ID.
"Folks may learn that without a document like a passport or a birth certificate, they can't register," Obama said. "Just because you don't have the money to travel abroad doesn't mean you shouldn't be able to vote here at home."
He stopped to add a clarification.
"And just to be clear, I know where my birth certificate is. But a lot of people don't," he said, as the crowd erupted in laughter. "A lot of people don't."
Feeding off the audience, the President joked that he thinks his birth certificate is "still up on a website somewhere."
He paused again, laughing to himself.
"You remember that? That was crazy," he said. "That was some crazy stuff. I hadn't thought about that in a while."
To quash a small but vocal group of Americans who contested Obama's place of birth, he released a certificate of live birth during his 2008 presidential campaign. In 2011, he released his long-form birth certificate. Both show that he was born in a Hawaii hospital on August 4, 1961.
Contemporaneously published newspaper announcements also noted the birth in the Aloha State.
Obama's remarks weren't the first time he joked about the issue. He's made quips about his birth certificate over the years.
CNN's Ashley Killough and Kevin Liptak contributed to this report.