Vice President Joe Biden's office has asked the U.S. Senate Press Gallery to investigate conservative journalist Jason Mattera's tactics during a recent interview, a process that could result in his press credentials being revoked, The Daily Caller has learned.

Mattera, the editor of Human Events and a widely known video ambush interviewer, caught Biden by surprise after asking if he would pose together for a joint picture. While embracing the vice president for the photo, Mattera asked Biden if he "regret[s] using a rape reference to describe Republican opposition to the president's bill."

After pausing for a moment during which he appears shocked, Biden attempted to defend his comments.

"I didn't use - no, no, no," Biden told Mattera amid a crowd of onlookers on Capitol Hill. "What I said - let's get it straight, guy, don't screw around with me. Let's get it straight."

"I said rape was up three times in Flint, [Mich.]," Biden continued. "There are the numbers. Go look at the numbers. Murder's up, rape is up and burglary's up. That's exactly what I said."

Biden, it turns out, was incorrect. The Washington Post's fact-checker blog gave him "four Pinocchios," the worst possible rating it can give to politicians for incorrect statements. FactCheck.org also debunked Biden's assertions. Those fact checkers used statistics different from the ones Biden was provided.