Published 19/01/2013 | 05:00
US Attorney General Eric Holder said President Obama's proposals to ban high-capacity magazines and assault weapons are "essential" to any effort to combat gun attacks.
Mr Holder called on
Congress to swiftly pass an expansion of the background check system for gun purchases at the US Conference of Mayors in Washington.
A month after the shooting that killed 20 students and six teachers at a
Connecticut school, Mr
Obama this week laid out proposals to regulate guns.