“We haven’t yet done enough to make our communities and our country safer,” the president said in his weekly address. “We have to do more to keep dangerous people from getting their hands on a gun so easily. We have to do more to heal troubled minds.”

The president did not mention the shooting at a Colorado high school on Friday where a student armed with a shotgun wounded at least two classmates before apparently taking his own life. The president’s address is recorded in advance.

Obama is due later Saturday to observe a moment of silence at the White House and light candles in memory of the 20 children and six school workers who died in a shooting at a Connecticut elementary school a year ago.