Joe Biden said that Mr Obama was "determined to take action" against gun violence and was considering making executive orders to stop further attacks. Last month's shooting at Sandy Hook Elementary School in Connecticut, in which 20 children were gunned down with a semi-automatic rifle, reopened the debate on America's liberal gun laws. Mr Biden has been meeting victims of gun violence and members of America's powerful gun lobby as part of an investigation into how the country deals with guns. He is due to make his recommendations to Mr Obama later this month.