BOLDUAN: It was a huge weekend in Iowa. The Democratic candidates for president flooding the state and the famous Iowa State Fair to meet voters and make their case. For Joe Biden's campaign, that also meant playing cleanup not once but twice in four days. Here was the latest one from the former vice president. Listen.</s>JOE BIDEN, (D) PRESIDENTIAL CANDIDATE: I watched what happened when the kids from Parkland marched up -- and I met with them and they went off the Hill, when I was vice president, they went up on the Hill, to go into those neighborhoods. All the congressman were like, no, I'm not here, I'm not here, don't tell them I'm around. They're afraid of it. They should be exposed. I watched what happened when those kids from Parkland came up to see me when I was vice president, and some of you covered it. And you watched what happened when they went up on the halls of Congress. Congress was basically cowering, not wanting to see them. They did not want to have to face it on camera.</s>BOLDUAN: Here's the thing. Biden was not vice president any longer when the Parkland tragedy happened in 2018. And this isn't the first and it likely won't be the last gaffe either from Joe Biden. But when do those gaffes and misstatements become an actual problem with voters, especially when running against a president like Donald Trump?
Joe Biden's Campaign Gaffes Worry Some as Democrats Hit Iowa.