Oregon college shooting: Obama's 'frustration' at US gun laws

US President Barack Obama has repeated his calls for US Congress to toughen up the gun laws in the wake of a fatal shooting in Oregon, where nine people were killed and seven others injured.

And he urged the public to apply pressure to their local politicians.

In an exclusive interview with the BBC in July, Mr Obama had said a failure to tackle gun control had been the greatest frustration of his presidency.

The BBC's Jon Sopel reports.