President Barack Obama decried what he called the "pattern" of mass shootings in the United States after an incident in California, and reiterated his call for tougher gun controls.
"The one thing we do know is that we have a pattern now of mass shootings in this country that has no parallel anywhere else in the world," Obama told CBS News.
"There are some steps we could take, not to eliminate every one of these mass shootings, but to improve the odds that they don't happen as frequently.
