Biden says new gun laws won't stop 'another mass shooting,' was he mispeaking or being too honest?

Erin Burnett discusses Vice President Joe Biden's recent gun control remarks, which was a departure from the administration's plan.

"Nothing we are going to do is fundamentally going to alter or eliminate the possibility of another mass shooting or guarantee that we will bring gun deaths down to a thousand a year from what it is now," Biden said.

But when he was surrounded by children who wrote the white house letters about gun violence he said: "We have a moral obligation to do everything in our power to diminish the prospect of something like this could happen again."

So which is it, Joe? Gun control will stop mass shootings, or not?

OutFront tonight: CNN contributor John Avlon, Cornell Belcher, and Reihan Salam.