US Senator in 15-hour filibuster calling for gun control after Orlando massacre

"Trying and trying and trying to do the right thing is ultimately just as important as getting the outcome in the end."

An American senator has forced a marathon debate in the US Senate of nearly 15 hours over gun control in the wake of the Orlando shooting.

Senator Chris Murphy deployed the filibuster technique, designed to block proceedings, in a bit to incite a compromise on the stalled gun issue.