How Might Proposed Gun Measures Help, Or Not Help, Deter Gun Violence?

President Trump has backed several proposals to tighten gun laws since last week's school shooting in Parkland, Florida, including raising the age limit to buy a gun, enhancing background checks and arming teachers.

Here & Now's Jeremy Hobson speaks with German Lopez (@germanrlopez), senior reporter for Vox, about the potential difference those measures could make in preventing gun violence.